tombs otmbs tmobs mtobs omtbs motbs tobms otbms tboms btoms obtms botms tmbos mtbos tbmos btmos mbtos bmtos ombts mobts obmts bomts mbots bmots tomsb otmsb tmosb mtosb omtsb motsb tosmb otsmb tsomb stomb ostmb sotmb tmsob mtsob tsmob stmob mstob smtob omstb mostb osmtb somtb msotb smotb tobsm otbsm tbosm btosm obtsm botsm tosbm otsbm tsobm stobm ostbm sotbm tbsom btsom tsbom stbom bstom sbtom obstm bostm osbtm sobtm bsotm sbotm tmbso mtbso tbmso btmso mbtso bmtso tmsbo mtsbo tsmbo stmbo mstbo smtbo tbsmo btsmo tsbmo stbmo bstmo sbtmo mbsto bmsto msbto smbto bsmto sbmto ombst mobst obmst bomst mbost bmost omsbt mosbt osmbt sombt msobt smobt obsmt bosmt osbmt sobmt bsomt sbomt mbsot bmsot msbot smbot bsmot sbmot
Note: these 'words' (valid or invalid) are all the permutations of the word tombs. These words are obtained by scrambling the letters in tombs.