rehab erhab rheab hreab ehrab herab reahb erahb raehb arehb earhb aerhb rhaeb hraeb raheb arheb hareb ahreb eharb hearb eahrb aehrb haerb aherb rehba erhba rheba hreba ehrba herba rebha erbha rbeha breha ebrha berha rhbea hrbea rbhea brhea hbrea bhrea ehbra hebra ebhra behra hbera bhera reabh erabh raebh arebh earbh aerbh rebah erbah rbeah breah ebrah berah rabeh arbeh rbaeh braeh abreh bareh eabrh aebrh ebarh bearh aberh baerh rhabe hrabe rahbe arhbe harbe ahrbe rhbae hrbae rbhae brhae hbrae bhrae rabhe arbhe rbahe brahe abrhe barhe habre ahbre hbare bhare abhre bahre ehabr heabr eahbr aehbr haebr ahebr ehbar hebar ebhar behar hbear bhear eabhr aebhr ebahr beahr abehr baehr haber ahber hbaer bhaer abher baher
Note: these 'words' (valid or invalid) are all the permutations of the word rehab. These words are obtained by scrambling the letters in rehab.