ribbie irbbie rbibie bribie ibrbie birbie ribbie irbbie rbibie bribie ibrbie birbie rbbiie brbiie rbbiie brbiie bbriie bbriie ibbrie bibrie ibbrie bibrie bbirie bbirie ribibe irbibe rbiibe briibe ibribe biribe riibbe iribbe riibbe iribbe iirbbe iirbbe rbiibe briibe ribibe irbibe biribe ibribe ibirbe biirbe iibrbe iibrbe biirbe ibirbe ribibe irbibe rbiibe briibe ibribe biribe riibbe iribbe riibbe iribbe iirbbe iirbbe rbiibe briibe ribibe irbibe biribe ibribe ibirbe biirbe iibrbe iibrbe biirbe ibirbe rbbiie brbiie rbbiie brbiie bbriie bbriie rbibie bribie ribbie irbbie birbie ibrbie rbibie bribie ribbie irbbie birbie ibrbie bbirie bbirie bibrie ibbrie bibrie ibbrie ibbire bibire ibbire bibire bbiire bbiire ibibre biibre iibbre iibbre biibre ibibre ibibre biibre iibbre iibbre biibre ibibre bbiire bbiire bibire ibbire bibire ibbire ribbei irbbei rbibei bribei ibrbei birbei ribbei irbbei rbibei bribei ibrbei birbei rbbiei brbiei rbbiei brbiei bbriei bbriei ibbrei bibrei ibbrei bibrei bbirei bbirei ribebi irbebi rbiebi briebi ibrebi birebi riebbi irebbi reibbi eribbi ierbbi eirbbi rbeibi breibi rebibi erbibi beribi ebribi iberbi bierbi iebrbi eibrbi beirbi ebirbi ribebi irbebi rbiebi briebi ibrebi birebi riebbi irebbi reibbi eribbi ierbbi eirbbi rbeibi breibi rebibi erbibi beribi ebribi iberbi bierbi iebrbi eibrbi beirbi ebirbi rbbeii brbeii rbbeii brbeii bbreii bbreii rbebii brebii rebbii erbbii berbii ebrbii rbebii brebii rebbii erbbii berbii ebrbii bberii bberii bebrii ebbrii bebrii ebbrii ibberi biberi ibberi biberi bbieri bbieri ibebri biebri iebbri eibbri beibri ebibri ibebri biebri iebbri eibbri beibri ebibri bbeiri bbeiri bebiri ebbiri bebiri ebbiri ribieb irbieb rbiieb briieb ibrieb birieb riibeb iribeb riibeb iribeb iirbeb iirbeb rbiieb briieb ribieb irbieb birieb ibrieb ibireb biireb iibreb iibreb biireb ibireb ribeib irbeib rbieib brieib ibreib bireib riebib irebib reibib eribib ierbib eirbib rbeiib breiib rebiib erbiib beriib ebriib iberib bierib iebrib eibrib beirib ebirib riiebb iriebb riiebb iriebb iirebb iirebb rieibb ireibb reiibb eriibb ieribb eiribb rieibb ireibb reiibb eriibb ieribb eiribb iierbb iierbb ieirbb eiirbb ieirbb eiirbb rbieib brieib ribeib irbeib bireib ibreib rbeiib breiib rebiib erbiib beriib ebriib riebib irebib reibib eribib ierbib eirbib bierib iberib beirib ebirib iebrib eibrib ibierb biierb iiberb iiberb biierb ibierb ibeirb bieirb iebirb eibirb beiirb ebiirb iiebrb iiebrb ieibrb eiibrb ieibrb eiibrb bieirb ibeirb beiirb ebiirb iebirb eibirb ribieb irbieb rbiieb briieb ibrieb birieb riibeb iribeb riibeb iribeb iirbeb iirbeb rbiieb briieb ribieb irbieb birieb ibrieb ibireb biireb iibreb iibreb biireb ibireb ribeib irbeib rbieib brieib ibreib bireib riebib irebib reibib eribib ierbib eirbib rbeiib breiib rebiib erbiib beriib ebriib iberib bierib iebrib eibrib beirib ebirib riiebb iriebb riiebb iriebb iirebb iirebb rieibb ireibb reiibb eriibb ieribb eiribb rieibb ireibb reiibb eriibb ieribb eiribb iierbb iierbb ieirbb eiirbb ieirbb eiirbb rbieib brieib ribeib irbeib bireib ibreib rbeiib breiib rebiib erbiib beriib ebriib riebib irebib reibib eribib ierbib eirbib bierib iberib beirib ebirib iebrib eibrib ibierb biierb iiberb iiberb biierb ibierb ibeirb bieirb iebirb eibirb beiirb ebiirb iiebrb iiebrb ieibrb eiibrb ieibrb eiibrb bieirb ibeirb beiirb ebiirb iebirb eibirb rbbiei brbiei rbbiei brbiei bbriei bbriei rbibei bribei ribbei irbbei birbei ibrbei rbibei bribei ribbei irbbei birbei ibrbei bbirei bbirei bibrei ibbrei bibrei ibbrei rbbeii brbeii rbbeii brbeii bbreii bbreii rbebii brebii rebbii erbbii berbii ebrbii rbebii brebii rebbii erbbii berbii ebrbii bberii bberii bebrii ebbrii bebrii ebbrii rbiebi briebi ribebi irbebi birebi ibrebi rbeibi breibi rebibi erbibi beribi ebribi riebbi irebbi reibbi eribbi ierbbi eirbbi bierbi iberbi beirbi ebirbi iebrbi eibrbi rbiebi briebi ribebi irbebi birebi ibrebi rbeibi breibi rebibi erbibi beribi ebribi riebbi irebbi reibbi eribbi ierbbi eirbbi bierbi iberbi beirbi ebirbi iebrbi eibrbi bbieri bbieri biberi ibberi biberi ibberi bbeiri bbeiri bebiri ebbiri bebiri ebbiri biebri ibebri beibri ebibri iebbri eibbri biebri ibebri beibri ebibri iebbri eibbri ibbier bibier ibbier bibier bbiier bbiier ibiber biiber iibber iibber biiber ibiber ibiber biiber iibber iibber biiber ibiber bbiier bbiier bibier ibbier bibier ibbier ibbeir bibeir ibbeir bibeir bbieir bbieir ibebir biebir iebbir eibbir beibir ebibir ibebir biebir iebbir eibbir beibir ebibir bbeiir bbeiir bebiir ebbiir bebiir ebbiir ibiebr biiebr iibebr iibebr biiebr ibiebr ibeibr bieibr iebibr eibibr beiibr ebiibr iiebbr iiebbr ieibbr eiibbr ieibbr eiibbr bieibr ibeibr beiibr ebiibr iebibr eibibr ibiebr biiebr iibebr iibebr biiebr ibiebr ibeibr bieibr iebibr eibibr beiibr ebiibr iiebbr iiebbr ieibbr eiibbr ieibbr eiibbr bieibr ibeibr beiibr ebiibr iebibr eibibr bbieir bbieir bibeir ibbeir bibeir ibbeir bbeiir bbeiir bebiir ebbiir bebiir ebbiir biebir ibebir beibir ebibir iebbir eibbir biebir ibebir beibir ebibir iebbir eibbir
Note: these 'words' (valid or invalid) are all the permutations of the word ribbie. These words are obtained by scrambling the letters in ribbie.