a-be a-ha aaaa aaab aaac aaae aaah aaal aaba aabb aabc aabh aabl aaca aacb aacc aace aach aacl aaea aaec aaha aahl aala aalc aale aall abaa abab abac abae abal abb- abba abbb abbe abca abcb abcc abch abcl abec abee abel abha abla able acaa acab acac acae acba acbl acca accc acce acch ace- acea acec aceh acel acha ache achh achl acla aclc acle aeac aecb aecl aela aelc ahab ahac ahah ahal ahel ahha ahla ahle alaa alac alae alal alb- alba albc albe alca alcc alce alea alec alee aleh alha all- alla alle allh alll baaa baah baal baba babb babe bac- baca bacc bace bach bael baha bahl bala balc bale ball bbbb bbch bbeb bblb bcaa bcbc bcca bccc bccl bcec bche beah beal beba bebb bebe beca bech beeb beel bela bele bell bhca bhcc bhel blaa blab blac blae blah blea bleb blee bleh caaa caab caac caah caal caba cabe cac- caca cacc cace cach caec caha cahe cahl cala calc cale call cbac cbal cbbc cbca cbcc cbce cbcl cbea cbec cbee cbha cbhl cblb cblc ccaa ccab ccac ccba ccbc ccca cccb cccc cccl ccee ccel ccha cche cchl ccla cclc ceac ceal ceba cec- ceca cece ceeb ceec ceel cehl cel- cela celc cele cell chaa chab chac chae chah chal chca chce chch chea cheb chec chee cheh chel chha chlc clab clea clec clee e-cl e-la eaba eabh eaca eacc each eaec eala ealc eale ebac ebal ebba ebbc ebcc ebel ebla ecaa ecac ecal ecbc ecbe ecca eccb eccc ecce eccl echa eche echl ecla eeca eeea eeee eele ehaa ehcc ehea eheh ehel ehle el-b elab elac elah elal elba elbe elca elcb elce elch elea elec elee eleh ella elle haab haal haba habe hace haec haha hal- hala halb hale hall hcbc hcca hccb hccc hcch heah heal hebb hebe heca hech heeb heel hehe hela hele hell hhaa hhcl hhhh hhla hlah laaa laac laal laba labe laca lacc lace lach lacl lael laha lahe lala lale lall lbcc lcac lcbc lcca lccc lcce lchc leaa leah leal leba leca lece lech leea leel lehe lela lele lell lhec lhee lhhh llcc lllc llll