a-ha aaaa aaab aaac aaad aaah aaal aaba aabb aabc aabd aabh aabl aaca aacb aacc aacd aach aacl aada aadc aagh aaha aahl aala aalc aald aall abaa abab abac abad abag abal abb- abba abbb abca abcb abcc abcd abch abcl abda abgd abgl abha abla acaa acab acac acad acag acba acbl acca accc accd acch acda acdb acdc acga acha achh achl acla aclc adaa adab adac adad adag adah adal adba adbc adcc adda addc addd addl adha adhd agac agad agag agal agba agca agcc agda agga agha agla aglc ahab ahac ahad ahah ahal ahdl ahha ahla alaa alac alad alag alal alb- alba albc alca alcc ald- alda aldl alg- alga alha all- alla allh alll baaa baad baah baal baba babb bac- baca bacc bach bada badb badd badh baga bagg bagh baha bahl bala balc bald ball bbad bbbb bbch bbdd bbga bblb bcaa bcbc bcbg bcca bccc bccl bcda bchd bdbc bddc bddh bgca bhag bhca bhcc bhdl blaa blab blac blad blag blah bldc bldg c-cd caaa caab caac caah caal caba cabg cac- caca cacc cach cada cadc cadd caga cagg caha cahl cala calc cald call cbac cbal cbbc cbca cbcc cbcl cbdb cbdc cbga cbgb cbha cbhl cblb cblc ccaa ccab ccac ccad ccag ccba ccbc ccca cccb cccc cccl ccdc ccdh ccga ccgc ccha cchl ccla cclc cclg cdaa cdac cdad cdba cdda cddb cddl cgac cgal cgcc cgcg chaa chab chac chad chag chah chal chca chch chgb chgd chha chlc clab clad clag clcd cldc daab daad daag daal daba dabb daca dada daga dagg dagh daha dahl dala dall dbag dbcc dcbc dcca dccb dccc dccl dcdb dddd ddlc dgac dgca dglc dhaa dhad dhag dhal dlab dlbd dlha gaal gaba gabb gabl gach gada gadd gaga gagg gaha gala gald gall gbag gc-c gcaa gcal gcbc gccc gcda gclc gdal gdca gddb ggcl gggg gghg ghll glaa glab glad glbc glcc haab haad haag haal haba hada hadh hadl hag- haga hagg hagh hagl haha hal- hala halb hald hall hbag hbcd hcbc hcca hccb hccc hcch hcgh hdca hdda hdlg hgah hggc hhaa hhcl hhgg hhhh hhla hlah laaa laac laad laag laal laba laca lacc lach lacl lada ladd lag- laga lagg lagh laha lala lald lall lbcc lcac lcad lcbc lcca lccc lcdd lchc ldha lgca lhhh llcc lldb lldc llgc lllc llll