a-a a-b a-i a-t aaa aab aae aag aai aao aap aat ab- aba abb abe abg abi abo abp abt aea aeb aee aeg aei aeo aep aet ag- aga agb age agg agi ago agp agt ai- aia aib aie aig aii aio aip ait aoa aob aoe aog aoi aoo aop aot ap- apa apb ape apg api apo app apt at- ata atb ate atg ati ato atp att b-p baa bab bae bag bai bao bap bat bba bbb bbe bbg bbi bbo bbp bbt be- bea beb bee beg bei beo bep bet bga bgb bge bgg bgi bgo bgp bgt bi- bia bib bie big bii bio bip bit boa bob boe bog boi boo bop bot bpa bpb bpe bpg bpi bpo bpp bpt bta btb bte btg bti bto btp btt eaa eab eae eag eai eao eap eat eba ebb ebe ebg ebi ebo ebp ebt eea eeb eee eeg eeo eep eet ega egb ege egg egi ego egp egt eia eib eie eig eii eio eip eit eo- eoa eob eoe eog eoi eoo eop eot ep- epa epb epe epg epi epo epp ept eta etb ete etg eti eto etp ett g-p gaa gab gae gag gai gao gap gat gba gbe gbg gbi gbo gbp gbt ge- gea geb gee geg gei geo gep get gga ggb ggg ggi ggo ggp ggt gia gib gie gig gii gio gip git goa gob goe gog goi goo gop got gpa gpb gpe gpg gpi gpo gpp gpt gta gtb gte gtg gti gto gtp gtt ia- iaa iab iae iag iai iao iap iat iba ibb ibe ibg ibi ibo ibp ibt ie- iea iee ieg iei iep iet iga igb ige igg igi igo igp igt iia iib iie iii iio iip iit io- ioa iob ioe iog ioi ioo iop iot ipa ipb ipe ipg ipi ipo ipp ipt ita itb ite itg iti ito itp itt o-i oaa oab oae oag oai oao oap oat ob- oba obb obe obg obi obo obp obt oea oeb oee oeg oei oeo oep oet oga oge ogg ogi ogo ogp ogt oia oib oie oii oio oip oit oo- ooa oob oog ooi ooo oop oot op- opa opb ope opg opi opo opp opt ot- ota otb ote otg oti oto otp ott p-p paa pab pae pag pai pao pap pat pba pbb pbe pbg pbi pbo pbp pbt pea peb pee peg pei peo pep pet pga pgb pge pgg pgi pgo pgp pgt pia pib pie pig pii pio pip pit poa pob poe pog poi poo pop pot ppa ppb ppe ppg ppi ppo ppp ppt pt- pta ptb pte ptg pti pto ptp ptt taa tab tae tag tai tao tap tat tba tbb tbe tbg tbi tbo tbp tbt te- tea teb tee teg tei teo tep tet tga tgb tge tgg tgi tgo tgp tgt tia tib tie tig tii tio tip tit to- toa tob toe tog toi too top tot tpa tpb tpe tpg tpi tpo tpp tpt tta ttb tte ttg tti tto ttp ttt