-al -ol -th a-a a-b a-c a-t aaa aab aac aah aal aao aar aat ab- aba abb abc abh abl abo abr abt ac- aca acb acc ach acl aco acr act aha ahb ahc ahh ahl aho ahr aht al- ala alb alc alh all alo alr alt aoa aob aoc aoh aol aoo aor aot ar- ara arb arc arh arl aro arr art at- ata atb atc ath atl ato atr att baa bab bac bah bal bao bar bat bba bbb bbc bbh bbl bbo bbr bbt bca bcb bcc bch bcl bco bcr bct bha bhb bhc bhh bhl bho bhr bht bla blb blc blh bll blo blr blt boa bob boc boh bol boo bor bot bra brb brh brl bro brr brt bta btb btc bth btl bto btr btt c-- caa cab cac cah cal cao car cat cba cbb cbc cbh cbl cbo cbr cbt cca ccb ccc cch ccl cco ccr cct ch- cha chb chc chh chl cho chr cht cl- cla clb clc clh cll clo clr clt co- coa cob coc coh col coo cor cot cra crb crc crh crl cro crr crt cta ctb ctc cth ctl cto ctr ctt haa hab hac hah hal hao har hat hba hbb hbc hbh hbl hbo hbr hbt hca hcb hcc hch hcl hco hcr hct hha hhb hhc hhh hhl hho hhr hht hla hlb hlc hlh hll hlo hlr hlt hoa hob hoc hoh hol hoo hor hot hr- hra hrb hrc hrh hrl hro hrr hrt hta htb htc hth htl hto htr htt la- laa lab lac lah lal lao lar lat lba lbb lbc lbh lbl lbo lbr lbt lca lcb lcc lch lcl lco lcr lct lha lhb lhc lhh lho lhr lht lla llb llc lll llo llr llt loa lob loc loh lol loo lor lot lra lrb lrc lrh lro lrr lrt lta ltb ltc lth ltl lto ltr ltt oaa oab oac oah oal oao oar oat ob- oba obb obc obh obl obo obr obt oc- oca ocb occ och ocl oco ocr oct oha ohc ohh ohl oho ohr oht ola olb olc oll olo olt oo- ooa oob ooc ooh ool ooo oor oot or- ora orb orc orh orl oro orr ort ot- ota otb otc oth otl oto otr ott ra- raa rab rac rah ral rao rar rat rba rbb rbc rbh rbl rbo rbr rbt rca rcb rcc rch rcl rco rcr rct rh- rha rhb rhc rhh rhl rho rhr rht rla rlc rlh rll rlo rlr rlt roa rob roc roh rol roo ror rot rra rrb rrc rrh rrl rrr rrt rta rtb rtc rtl rto rtr rtt taa tab tac tah tal tao tar tat tba tbb tbc tbh tbl tbo tbr tbt tca tcb tcc tch tcl tco tcr tct th- tha thb thc thh thl tho thr tht tla tlc tlh tll tlo tlr tlt to- toa tob toc toh tol too tor tot tra trb trc trh trl tro trr trt tta ttb ttc tth ttl tto ttr ttt