seebc esebc seebc esebc eesbc eesbc sebec esbec sbeec bseec ebsec besec sebec esbec sbeec bseec ebsec besec eebsc eebsc ebesc beesc ebesc beesc seecb esecb seecb esecb eescb eescb seceb esceb sceeb cseeb ecseb ceseb seceb esceb sceeb cseeb ecseb ceseb eecsb eecsb ecesb ceesb ecesb ceesb sebce esbce sbece bsece ebsce besce secbe escbe scebe csebe ecsbe cesbe sbcee bscee scbee csbee bcsee cbsee ebcse becse ecbse cebse bcese cbese sebce esbce sbece bsece ebsce besce secbe escbe scebe csebe ecsbe cesbe sbcee bscee scbee csbee bcsee cbsee ebcse becse ecbse cebse bcese cbese eebcs eebcs ebecs beecs ebecs beecs eecbs eecbs ecebs ceebs ecebs ceebs ebces beces ecbes cebes bcees cbees ebces beces ecbes cebes bcees cbees
Note: these 'words' (valid or invalid) are all the permutations of the word seebc. These words are obtained by scrambling the letters in seebc.