banhc abnhc bnahc nbahc anbhc nabhc bahnc abhnc bhanc hbanc ahbnc habnc bnhac nbhac bhnac hbnac nhbac hnbac anhbc nahbc ahnbc hanbc nhabc hnabc banch abnch bnach nbach anbch nabch bacnh abcnh bcanh cbanh acbnh cabnh bncah nbcah bcnah cbnah ncbah cnbah ancbh nacbh acnbh canbh ncabh cnabh bahcn abhcn bhacn hbacn ahbcn habcn bachn abchn bcahn cbahn acbhn cabhn bhcan hbcan bchan cbhan hcban chban ahcbn hacbn achbn cahbn hcabn chabn bnhca nbhca bhnca hbnca nhbca hnbca bncha nbcha bcnha cbnha ncbha cnbha bhcna hbcna bchna cbhna hcbna chbna nhcba hncba nchba cnhba hcnba chnba anhcb nahcb ahncb hancb nhacb hnacb anchb nachb acnhb canhb ncahb cnahb ahcnb hacnb achnb cahnb hcanb chanb nhcab hncab nchab cnhab hcnab chnab
Note: these 'words' (valid or invalid) are all the permutations of the word banhc. These words are obtained by scrambling the letters in banhc.