-ic a-a a-c a-i a-t aaa aac aae aaf aag aai aan aat ac- aca acc ace acf acg aci acn act aea aec aee aef aeg aei aen aet af- afa afc afe aff afg afi afn aft ag- aga agc age agf agg agi agn agt ai- aia aic aie aif aig aii ain ait an- ana anc ane anf ang ani ann ant at- ata atc ate atf atg ati atn att c-- caa cac cae caf cag cai can cat cca ccc cce ccf ccg cci ccn cct ce- cea cec cee cef ceg cei cen cet cfa cfc cfe cff cfg cfi cfn cft cga cgc cge cgg cgi cgn cgt ci- cia cic cie cif cig cii cin cit cn- cna cnc cne cnf cng cni cnn cnt cta ctc cte ctf ctg cti ctn ctt eaa eac eae eaf eag eai ean eat ec- eca ecc ece ecf ecg eci ecn ect eea eec eee eef eeg een eet ef- efa efc efe eff efg efi eft ega egc ege egf egg egi egn egt eia eic eie eif eig eii ein eit en- ena enc ene enf eng eni enn ent eta etc ete etf etg eti etn ett faa fac fae faf fag fai fan fat fca fcc fce fcf fcg fci fcn fct fea fec fee fef feg fei fen fet ffa ffc ffe fff ffg ffi ffn fft fga fgc fge fgf fgg fgi fgn fgt fia fic fie fif fig fii fin fit fna fnc fne fnf fng fni fnn fnt fta ftc fte ftf ftg fti ftn ftt gaa gac gae gaf gag gai gan gat gca gcc gce gcf gcg gci gcn gct ge- gea gec gee gef geg gei gen get gfa gfc gfe gff gfi gft gga ggc ggg ggi ggn ggt gia gic gie gif gig gii gin git gna gnc gne gnf gni gnn gnt gta gtc gte gtf gtg gti gtn gtt i-f ia- iaa iac iae iaf iag iai ian iat ica icc ice icf icg ici icn ict ie- iea iec iee ief ieg iei ien iet ifa ifc ife iff ifg ifi ifn ift iga igc ige igf igg igi ign igt iia iic iie iif iii iin iit in- ina inc ine inf ing ini inn int ita itc ite itf itg iti itn itt n-i naa nac nae naf nag nai nan nat nca ncc nce ncf ncg nci ncn nct ne- nea nec nee nef neg nei nen net nfa nfc nfe nff nfi nfn nft nga ngc nge ngf ngg ngi ngn ngt nia nic nie nif nig nii nin nit nna nnc nne nnf nng nni nnn nnt nta ntc nte ntf ntg nti ntn ntt taa tac tae taf tag tai tan tat tca tcc tce tcf tcg tci tcn tct te- tea tec tee tef teg tei ten tet tfa tfc tfe tff tfg tfi tfn tft tga tgc tge tgf tgg tgi tgn tgt tia tic tie tif tig tii tin tit tna tnc tne tnf tng tni tnn tnt tta ttc tte ttf ttg tti ttn ttt