a-a a-b a-c a-t aaa aab aac aad aae aam aao aat ab- aba abb abc abd abe abm abo abt ac- aca acb acc acd ace acm aco act ad- ada adb adc add ade adm ado adt aea aeb aec aed aee aem aeo aet ama amb amc amd ame amm amo amt aoa aob aoc aod aoe aom aoo aot at- ata atb atc atd ate atm ato att baa bab bac bad bae bam bao bat bba bbb bbc bbd bbe bbm bbo bbt bca bcb bcc bcd bce bcm bco bct bda bdb bdc bdd bde bdm bdo bdt be- bea beb bec bed bee bem beo bet bma bmb bmc bmd bme bmm bmo bmt boa bob boc bod boe bom boo bot bta btb btc btd bte btm bto btt c-- caa cab cac cad cae cam cao cat cba cbb cbc cbd cbe cbm cbo cbt cca ccb ccc ccd cce ccm cco cct cda cdb cdc cdd cde cdm cdo cdt ce- cea ceb cec ced cee cem ceo cet cma cmb cmc cmd cme cmm cmo cmt co- coa cob coc cod coe com coo cot cta ctb ctc ctd cte ctm cto ctt daa dab dac dad dae dam dao dat dba dbb dbc dbd dbe dbm dbo dbt dca dcb dcc dcd dce dcm dco dct dda ddb ddc ddd dde ddm ddo ddt de- dea deb dec ded dee dem deo det dma dmb dmc dmd dme dmm dmo dmt doa dob doc dod doe dom doo dot dta dtb dtc dtd dte dtm dto dtt eaa eab eac ead eae eam eao eat eba ebb ebc ebd ebe ebm ebo ebt ec- eca ecb ecc ecd ece ecm eco ect ed- eda edb edc edd ede edm edo edt eea eeb eec eed eee eem eeo eet em- ema emb emc emd eme emm emo emt eo- eoa eob eoc eod eoe eom eoo eot eta etb etc etd ete etm eto ett m-o maa mab mac mad mae mam mao mat mba mbb mbc mbd mbe mbm mbo mbt mc- mca mcb mcc mcd mce mcm mco mct mda mdb mdc mdd mde mdm mdo mdt mea meb mec med mee mem meo met mma mmb mmc mmd mme mmm mmo mmt moa mob moc mod moe mom moo mot mta mtb mtc mtd mte mtm mto mtt oaa oab oac oad oae oam oao oat ob- oba obb obc obd obe obm obo obt oc- oca ocb occ ocd ocm oco oct oda odb odc odd ode odm odo odt oea oeb oec oed oee oem oeo oet om- oma omb omc omd ome omm omo omt oo- ooa oob ooc ood oom ooo oot ot- ota otb otc otd ote otm oto ott taa tab tac tad tae tam tao tat tba tbb tbc tbd tbe tbm tbo tbt tca tcb tcc tcd tce tcm tco tct tda tdb tdc tdd tde tdm tdo tdt te- tea teb tec ted tee tem teo tet tma tmb tmc tmd tme tmm tmo tmt to- toa tob toc tod toe tom too tot tta ttb ttc ttd tte ttm tto ttt