-ic -th a-a a-b a-c a-i a-t aaa aab aac aah aai aao aat ab- aba abb abc abh abi abo abt ac- aca acb acc ach aci aco act aha ahb ahc ahh ahi aho aht ai- aia aib aic aih aii aio ait aoa aob aoc aoh aoi aoo aot at- ata atb atc ath ati ato att baa bab bac bah bai bao bat bba bbb bbc bbh bbi bbo bbt bca bcb bcc bch bci bco bct bha bhb bhc bhh bhi bho bht bi- bia bib bic bih bii bio bit boa bob boc boh boi boo bot bta btb btc bth bti bto btt c-- caa cab cac cah cai cao cat cba cbb cbc cbh cbi cbo cbt cca ccb ccc cch cci cco cct ch- cha chb chc chh chi cho cht ci- cia cib cic cih cii cio cit co- coa cob coc coh coi coo cot cta ctb ctc cth cti cto ctt h-i haa hab hac hah hai hao hat hba hbb hbc hbh hbi hbo hbt hca hcb hcc hch hci hco hct hha hhb hhc hhh hhi hho hht hia hib hic hih hii hio hit hoa hob hoc hoh hoi hoo hot hta htb htc hth hti hto htt ia- iaa iab iac iah iai iao iat iba ibb ibc ibh ibi ibo ibt ica icb icc ich ici ico ict iha ihb ihc ihh ihi iho iht iia iib iic iih iii iio iit io- ioa iob ioc ioh ioi ioo iot ita itb itc ith iti ito itt o-i oaa oab oac oah oai oao oat ob- oba obb obc obh obi obo obt oc- oca ocb occ och oci oco oct oha ohc ohh ohi oho oht oia oib oic oii oio oit oo- ooa oob ooc ooh ooi ooo oot ot- ota otb otc oth oti oto ott taa tab tac tah tai tao tat tba tbb tbc tbh tbi tbo tbt tca tcb tcc tch tci tco tct th- tha thb thc thh thi tho tht tia tib tic tih tii tio tit to- toa tob toc toh toi too tot tta ttb ttc tth tti tto ttt