-vac a-do aaaa aaab aaac aaad aaal aaav aaba aabb aabc aabd aabl aaca aacb aacc aacd aacl aaco aacv aada aadc aala aalc aald aall aalo aaoo aava abaa abab abac abad abal abb- abba abbb abbo abca abcb abcc abcd abcl abda abdo abla ablo ablv aboa abob abod abol aboo abov abva abvd acaa acab acac acad acba acbl acca accc accd acco acda acdb acdc acla aclc acoa acod acol acvv adaa adab adac adad adal adao adba adbc adcc adda addc addd addl addo adob adoc adod adoo advb alaa alac alad alal alao alb- alba albc albo alca alcc alco ald- alda aldl aldo all- alla alll allo aloa aloc alod alol aloo alov alva alvo aoba aoca aola avab aval avao avcc avco avda avlb avva avvo baaa baad baal baba babb babo bac- baca bacc baco bada badb badd bado bala balc bald ball balo baol bava bbad bbbb bbdd bbdo bblb bcaa bcbc bcca bccc bccl bcda bcvo bdav bdbc bddc blaa blab blac blad bldc blob bloc blod bloo blvd boab boac boad boal boba bobb bobo boca boco boda bodb bodo bola bold boll bolo boob booc bood bool bova bovo c-bo c-cd caaa caab caac caal caba cabo cac- caca cacc caco cada cadc cadd cado cala calc cald call calo caod caol cava cavo cbac cbal cbbc cbca cbcc cbcl cbdb cbdc cbdo cblb cblc cbol cbva cbvb ccaa ccab ccac ccad ccba ccbc ccca cccb cccc cccl cccv ccdc ccla cclc cclv ccob ccoc ccod ccvo cdaa cdac cdad cdba cdda cddb cddl cdlv cdvd clab clad clav clcd cldc clob clod cloo coad coal coba cobb cobo coca coco coda codd codl col- cola colb cold coll colo coob cood cool cova covo cvac cvca cvcc d-bo daab daad daal daba dabb dabo daca dada dado dala dall dalo dava dbcc dcbc dcca dccb dccc dccl dccv dcdb dclv dcvd dddd ddlc ddoc dlab dlbd dlco dlvo doab doal doba dobb dobl doca doco dod- doda dodd dodo dola dold doll dolo doob dood dool dvda dvla dvoa dvvl laaa laac laad laal laba labo laca lacc lacl laco lada ladd lado lala lald lall lalo lava lavc lavo lbcc lcac lcad lcbc lcca lccc lcdd lddv llao llcc lldb lldc lllc llll lloa lloc llod lloo lo-v loac load lob- loba lobb lobo loca locc loco loda lola lold loll lolo loob looc lood lool lovo lvad lvcc lvov oall obad obal obba obbo obla obol ocab ocac ocad ocal ocbc occa occc oclc odac odal odbo odda oddd odla odoo odva olac olav olba olbo olca olcc oldb olla ollo olov ooaa ooba ooda oola oold oolo oooo oval ovda ovo- ovod ovol ovoo vaad vaal vaca vaco vada vado vala vald vall valo vava vbcc vcal vdcc vlab vlad vlba vlcc vldb vldl vloc voad voca voda vodo vola volc vold voll volo vooc vool vvob vvvv