bunch ubnch bnuch nbuch unbch nubch bucnh ubcnh bcunh cbunh ucbnh cubnh bncuh nbcuh bcnuh cbnuh ncbuh cnbuh uncbh nucbh ucnbh cunbh ncubh cnubh bunhc ubnhc bnuhc nbuhc unbhc nubhc buhnc ubhnc bhunc hbunc uhbnc hubnc bnhuc nbhuc bhnuc hbnuc nhbuc hnbuc unhbc nuhbc uhnbc hunbc nhubc hnubc buchn ubchn bcuhn cbuhn ucbhn cubhn buhcn ubhcn bhucn hbucn uhbcn hubcn bchun cbhun bhcun hbcun chbun hcbun uchbn cuhbn uhcbn hucbn chubn hcubn bnchu nbchu bcnhu cbnhu ncbhu cnbhu bnhcu nbhcu bhncu hbncu nhbcu hnbcu bchnu cbhnu bhcnu hbcnu chbnu hcbnu nchbu cnhbu nhcbu hncbu chnbu hcnbu unchb nuchb ucnhb cunhb ncuhb cnuhb unhcb nuhcb uhncb huncb nhucb hnucb uchnb cuhnb uhcnb hucnb chunb hcunb nchub cnhub nhcub hncub chnub hcnub
Note: these 'words' (valid or invalid) are all the permutations of the word bunch. These words are obtained by scrambling the letters in bunch.