-ic a-a a-b a-c a-i a-t aaa aab aac aai aam aan aao aat ab- aba abb abc abi abm abn abo abt ac- aca acb acc aci acm acn aco act ai- aia aib aic aii aim ain aio ait ama amb amc ami amm amn amo amt an- ana anb anc ani anm ann ano ant aoa aob aoc aoi aom aon aoo aot at- ata atb atc ati atm atn ato att baa bab bac bai bam ban bao bat bba bbb bbc bbi bbm bbn bbo bbt bca bcb bcc bci bcm bcn bco bct bi- bia bib bic bii bim bin bio bit bma bmb bmc bmi bmm bmn bmo bmt bna bnb bnc bni bnn bno bnt boa bob boc boi bom bon boo bot bta btb btc bti btm btn bto btt c-- caa cab cac cai cam can cao cat cba cbb cbc cbi cbm cbn cbo cbt cca ccb ccc cci ccm ccn cco cct ci- cia cib cic cii cim cin cio cit cma cmb cmc cmi cmm cmn cmo cmt cn- cna cnb cnc cni cnm cnn cno cnt co- coa cob coc coi com con coo cot cta ctb ctc cti ctm ctn cto ctt ia- iaa iab iac iai iam ian iao iat iba ibb ibc ibi ibm ibn ibo ibt ica icb icc ici icm icn ico ict iia iib iic iii iim iin iio iit im- ima imb imc imi imm imn imo imt in- ina inb inc ini inm inn ino int io- ioa iob ioc ioi iom ion ioo iot ita itb itc iti itm itn ito itt m-o maa mab mac mai mam man mao mat mba mbb mbc mbi mbm mbo mbt mc- mca mcb mcc mci mcm mcn mco mct mi- mia mib mic mii mim min mio mit mma mmb mmc mmi mmm mmn mmo mmt mna mnb mnc mni mnm mnn mno mnt moa mob moc moi mom mon moo mot mta mtb mtc mti mtm mtn mto mtt n-i naa nab nac nai nam nan nao nat nba nbb nbc nbi nbm nbn nbo nbt nca ncb ncc nci ncm ncn nco nct nia nib nic nii nim nin nio nit nma nmb nmc nmi nmm nmn nmo nmt nna nnb nnc nni nnm nnn nno nnt no- noa nob noc noi nom non noo not nta ntb ntc nti ntm ntn nto ntt o-i oaa oab oac oai oam oan oao oat ob- oba obb obc obi obm obn obo obt oc- oca ocb occ oci ocm ocn oco oct oia oib oic oii oim oin oio oit om- oma omb omc omi omm omn omo omt on- ona onb onc oni onn ono ont oo- ooa oob ooc ooi oom oon ooo oot ot- ota otb otc oti otm otn oto ott taa tab tac tai tam tan tao tat tba tbb tbc tbi tbm tbn tbo tbt tca tcb tcc tci tcm tcn tco tct tia tib tic tii tim tin tio tit tma tmb tmc tmi tmm tmn tmo tmt tna tnb tnc tni tnm tnn tno tnt to- toa tob toc toi tom ton too tot tta ttb ttc tti ttm ttn tto ttt