-ic -th a-a a-b a-c a-i a-t aaa aab aac aah aai aao aar aat ab- aba abb abc abh abi abo abr abt ac- aca acb acc ach aci aco acr act aha ahb ahc ahh ahi aho ahr aht ai- aia aib aic aih aii aio air ait aoa aob aoc aoh aoi aoo aor aot ar- ara arb arc arh ari aro arr art at- ata atb atc ath ati ato atr att baa bab bac bah bai bao bar bat bba bbb bbc bbh bbi bbo bbr bbt bca bcb bcc bch bci bco bcr bct bha bhb bhc bhh bhi bho bhr bht bi- bia bib bic bih bii bio bir bit boa bob boc boh boi boo bor bot bra brb brh bri bro brr brt bta btb btc bth bti bto btr btt c-- caa cab cac cah cai cao car cat cba cbb cbc cbh cbi cbo cbr cbt cca ccb ccc cch cci cco ccr cct ch- cha chb chc chh chi cho chr cht ci- cia cib cic cih cii cio cir cit co- coa cob coc coh coi coo cor cot cra crb crc crh cri cro crr crt cta ctb ctc cth cti cto ctr ctt h-i haa hab hac hah hai hao har hat hba hbb hbc hbh hbi hbo hbr hbt hca hcb hcc hch hci hco hcr hct hha hhb hhc hhh hhi hho hhr hht hia hib hic hih hii hio hir hit hoa hob hoc hoh hoi hoo hor hot hr- hra hrb hrc hrh hri hro hrr hrt hta htb htc hth hti hto htr htt ia- iaa iab iac iah iai iao iar iat iba ibb ibc ibh ibi ibo ibr ibt ica icb icc ich ici ico icr ict iha ihb ihc ihh ihi iho ihr iht iia iib iic iih iii iio iir iit io- ioa iob ioc ioh ioi ioo ior iot ir- ira irb irc iri iro irr irt ita itb itc ith iti ito itt o-i oaa oab oac oah oai oao oar oat ob- oba obb obc obh obi obo obr obt oc- oca ocb occ och oci oco ocr oct oha ohc ohh ohi oho ohr oht oia oib oic oii oio oir oit oo- ooa oob ooc ooh ooi ooo oor oot or- ora orb orc orh ori oro orr ort ot- ota otb otc oth oti oto otr ott ra- raa rab rac rah rai rao rar rat rba rbb rbc rbh rbi rbo rbr rbt rca rcb rcc rch rci rco rcr rct rh- rha rhb rhc rhh rhi rho rhr rht ria rib ric rih rii rio rir rit roa rob roc roh roi roo ror rot rra rrb rrc rrh rri rrr rrt rta rtb rtc rti rto rtr rtt taa tab tac tah tai tao tar tat tba tbb tbc tbh tbi tbo tbr tbt tca tcb tcc tch tci tco tcr tct th- tha thb thc thh thi tho thr tht tia tib tic tih tii tio tir tit to- toa tob toc toh toi too tor tot tra trb trc trh tri tro trr trt tta ttb ttc tth tti tto ttr ttt