-ic a-a a-b a-c a-i a-t aaa aab aac aai aao aat aau ab- aba abb abc abi abo abt abu ac- aca acb acc aci aco act acu ai- aia aib aic aii aio ait aiu aoa aob aoc aoi aoo aot aou at- ata atb atc ati ato att atu au- aua aub auc aui auo aut b-u baa bab bac bai bao bat bau bba bbb bbc bbi bbo bbt bbu bca bcb bcc bci bco bct bcu bi- bia bib bic bii bio bit biu boa bob boc boi boo bot bou bta btb btc bti bto btt btu bua bub buc bui buo but buu c-- caa cab cac cai cao cat cau cba cbb cbc cbi cbo cbt cbu cca ccb ccc cci cco cct ccu ci- cia cib cic cii cio cit ciu co- coa cob coc coi coo cot cou cta ctb ctc cti cto ctt ctu cua cub cuc cui cuo cut cuu ia- iaa iab iac iai iao iat iau iba ibb ibc ibi ibo ibt ibu ica icb icc ici ico ict icu iia iib iic iii iio iit iiu io- ioa iob ioc ioi ioo iot iou ita itb itc iti ito itt itu iu- iua iub iuc iui iut o-i oaa oab oac oai oao oat oau ob- oba obb obc obi obo obt obu oc- oca ocb occ oci oco oct ocu oia oib oic oii oio oit oiu oo- ooa oob ooc ooi ooo oot ot- ota otb otc oti oto ott otu ou- oua ouc oui ouo out taa tab tac tai tao tat tau tba tbb tbc tbi tbo tbt tbu tca tcb tcc tci tco tct tcu tia tib tic tii tio tit tiu to- toa tob toc toi too tot tou tta ttb ttc tti tto ttt ttu tua tub tuc tui tuo tut tuu ua- uaa uab uac uai uao uat uau uba ubb ubc ubi ubo ubt ubu uca ucb ucc uci uco uct ucu uia uib uic uii uio uit uiu uoa uob uoc uoo uot uta utb utc uti uto utt utu uua uuc uut uuu