brach rbach barch abrch rabch arbch brcah rbcah bcrah cbrah rcbah crbah bacrh abcrh bcarh cbarh acbrh cabrh racbh arcbh rcabh crabh acrbh carbh brahc rbahc barhc abrhc rabhc arbhc brhac rbhac bhrac hbrac rhbac hrbac bahrc abhrc bharc hbarc ahbrc habrc rahbc arhbc rhabc hrabc ahrbc harbc brcha rbcha bcrha cbrha rcbha crbha brhca rbhca bhrca hbrca rhbca hrbca bchra cbhra bhcra hbcra chbra hcbra rchba crhba rhcba hrcba chrba hcrba bachr abchr bcahr cbahr acbhr cabhr bahcr abhcr bhacr hbacr ahbcr habcr bchar cbhar bhcar hbcar chbar hcbar achbr cahbr ahcbr hacbr chabr hcabr rachb archb rcahb crahb acrhb carhb rahcb arhcb rhacb hracb ahrcb harcb rchab crhab rhcab hrcab chrab hcrab achrb cahrb ahcrb hacrb charb hcarb
Note: these 'words' (valid or invalid) are all the permutations of the word brach. These words are obtained by scrambling the letters in brach.