-ic a-a a-c a-i a-t aaa aac aae aaf aag aai aao aat ac- aca acc ace acf acg aci aco act aea aec aee aef aeg aei aeo aet af- afa afc afe aff afg afi afo aft ag- aga agc age agf agg agi ago agt ai- aia aic aie aif aig aii aio ait aoa aoc aoe aof aog aoi aoo aot at- ata atc ate atf atg ati ato att c-- caa cac cae caf cag cai cao cat cca ccc cce ccf ccg cci cco cct ce- cea cec cee cef ceg cei ceo cet cfa cfc cfe cff cfg cfi cfo cft cga cgc cge cgg cgi cgo cgt ci- cia cic cie cif cig cii cio cit co- coa coc coe cof cog coi coo cot cta ctc cte ctf ctg cti cto ctt eaa eac eae eaf eag eai eao eat ec- eca ecc ece ecf ecg eci eco ect eea eec eee eef eeg eeo eet ef- efa efc efe eff efg efi efo eft ega egc ege egf egg egi ego egt eia eic eie eif eig eii eio eit eo- eoa eoc eoe eof eog eoi eoo eot eta etc ete etf etg eti eto ett faa fac fae faf fag fai fao fat fca fcc fce fcf fcg fci fco fct fea fec fee fef feg fei feo fet ffa ffc ffe fff ffg ffi ffo fft fga fgc fge fgf fgg fgi fgt fia fic fie fif fig fii fit foa foc foe fof fog foi foo fot fta ftc fte ftf ftg fti fto ftt gaa gac gae gaf gag gai gao gat gca gcc gce gcf gcg gci gco gct ge- gea gec gee gef geg gei geo get gfa gfc gfe gff gfi gfo gft gga ggc ggg ggi ggo ggt gia gic gie gif gig gii gio git goa goc goe gof gog goi goo got gta gtc gte gtf gtg gti gto gtt i-f ia- iaa iac iae iaf iag iai iao iat ica icc ice icf icg ici ico ict ie- iea iec iee ief ieg iei iet ifa ifc ife iff ifg ifi ifo ift iga igc ige igf igg igi igo igt iia iic iie iif iii iio iit io- ioa ioc ioe iof iog ioi ioo iot ita itc ite itf itg iti ito itt o-i oaa oac oae oaf oag oai oao oat oc- oca occ ocf ocg oci oco oct oea oec oee oef oeg oei oeo oet of- ofa ofc ofe off ofg ofi ofo oft oga ogc oge ogf ogg ogi ogo ogt oia oic oie oif oii oio oit oo- ooa ooc oof oog ooi ooo oot ot- ota otc ote otf otg oti oto ott taa tac tae taf tag tai tao tat tca tcc tce tcf tcg tci tco tct te- tea tec tee tef teg tei teo tet tfa tfc tfe tff tfg tfi tfo tft tga tgc tge tgf tgg tgi tgo tgt tia tic tie tif tig tii tio tit to- toa toc toe tof tog toi too tot tta ttc tte ttf ttg tti tto ttt