-al -ly -ol a-a a-b a-c aaa aab aac aaf aal aao aay ab- aba abb abc abf abl abo aby ac- aca acb acc acf acl aco acy af- afa afb afc aff afl afo afy al- ala alb alc alf all alo aly aoa aob aoc aof aol aoo ay- aya ayc ayf ayl ayo baa bab bac baf bal bao bay bba bbb bbc bbf bbl bbo bby bca bcb bcc bcf bcl bco bcy bfa bfb bfc bff bfl bfo bfy bla blb blc blf bll blo bly boa bob boc bof bol boo boy by- bya byc byf byl byo c-- caa cab cac caf cal cao cay cba cbb cbc cbf cbl cbo cby cca ccb ccc ccf ccl cco cfa cfb cfc cff cfl cfo cl- cla clb clc clf cll clo cly co- coa cob coc cof col coo coy cya cyb cyc cyf cyl cyo faa fab fac faf fal fao fay fba fbb fbc fbf fbl fbo fca fcb fcc fcf fcl fco fcy ffa ffc fff ffl ffo ffy fla flb flc flf fll flo fly foa fob foc fof fol foo foy fy- fya fyb fyc fyo la- laa lab lac laf lal lao lay lba lbb lbc lbf lbl lbo lca lcb lcc lcf lcl lco lcy lfa lfb lfc lff lfl lfo lla llb llc llf lll llo lly loa lob loc lof lol loo loy lya lyc lyf lyl lyo oaa oab oac oaf oal oao ob- oba obb obc obf obl obo oby oc- oca ocb occ ocf ocl oco of- ofa ofb ofc off ofl ofo ola olb olc olf oll olo oly oo- ooa oob ooc oof ool ooo oya oyl oyo yaa yab yac yaf yal yao yay ybc ybf ybl yby yca ycc ycf ycl yco ycy yfa yfc yff ylc yll yly yob yoc yof yol yoo yoy yyb yyc yyf yyy