-al -ly -ol a-a a-b a-t aaa aab aal aao aar aat aay ab- aba abb abl abo abr abt aby al- ala alb all alo alr alt aly aoa aob aol aoo aor aot ar- ara arb arl aro arr art ary at- ata atb atl ato atr att ay- aya ayl ayo ayr ayt baa bab bal bao bar bat bay bba bbb bbl bbo bbr bbt bby bla blb bll blo blr blt bly boa bob bol boo bor bot boy bra brb brl bro brr brt bry bta btb btl bto btr btt bty by- bya byl byo byr byt la- laa lab lal lao lar lat lay lba lbb lbl lbo lbr lbt lla llb lll llo llr llt lly loa lob lol loo lor lot loy lra lrb lro lrr lrt lry lta ltb ltl lto ltr ltt lya lyl lyo lyr lyt oaa oab oal oao oar oat ob- oba obb obl obo obr obt oby ola olb oll olo olt oly oo- ooa oob ool ooo oor oot or- ora orb orl oro orr ort ory ot- ota otb otl oto otr ott oya oyl oyo ra- raa rab ral rao rar rat ray rba rbb rbl rbo rbr rbt rla rll rlo rlr rlt rly roa rob rol roo ror rot roy rra rrb rrl rrr rrt rta rtb rtl rto rtr rtt rty ry- rya ryo ryr ryy taa tab tal tao tar tat tay tba tbb tbl tbo tbr tbt tla tll tlo tlr tlt to- toa tob tol too tor tot toy tra trb trl tro trr trt try tta ttb ttl tto ttr ttt tty tya tyl tyo tyr tyt yaa yab yal yao yar yat yay ybl ybr yby yll ylr ylt yly yob yol yoo yor yot yoy yra yro yrt yta ytl yto ytr ytt yyb yyt yyy