a-a a-b a-i a-t aaa aab aae aai aam aan aas aat ab- aba abb abe abi abm abn abs abt aea aeb aee aei aem aen aes aet ai- aia aib aie aii aim ain ais ait ama amb ame ami amm amn ams amt an- ana anb ane ani anm ann ans ant as- asa asb ase asi asm asn ass ast at- ata atb ate ati atm atn ats att baa bab bae bai bam ban bas bat bba bbb bbe bbi bbm bbn bbs bbt be- bea beb bee bei bem ben bes bet bi- bia bib bie bii bim bin bis bit bma bmb bme bmi bmm bmn bms bmt bna bnb bne bni bnn bns bnt bsa bsb bse bsi bsm bsn bss bst bta btb bte bti btm btn bts btt eaa eab eae eai eam ean eas eat eba ebb ebe ebi ebm ebn ebs ebt eea eeb eee eem een ees eet eia eib eie eii eim ein eis eit em- ema emb eme emi emm emn ems emt en- ena enb ene eni enm enn ens ent es- esa esb ese esi esm esn ess est eta etb ete eti etm etn ets ett ia- iaa iab iae iai iam ian ias iat iba ibb ibe ibi ibm ibn ibs ibt ie- iea iee iei iem ien ies iet iia iib iie iii iim iin iis iit im- ima imb ime imi imm imn ims imt in- ina inb ine ini inm inn ins int is- isa isb ise isi ism isn iss ist ita itb ite iti itm itn its itt maa mab mae mai mam man mas mat mba mbb mbe mbi mbm mbs mbt mea meb mee mei mem men mes met mi- mia mib mie mii mim min mis mit mma mmb mme mmi mmm mmn mms mmt mna mnb mne mni mnm mnn mns mnt msa msb mse msi msm msn mss mst mta mtb mte mti mtm mtn mts mtt n-i naa nab nae nai nam nan nas nat nba nbb nbe nbi nbm nbn nbs nbt ne- nea neb nee nei nem nen nes net nia nib nie nii nim nin nis nit nma nmb nme nmi nmm nmn nms nmt nna nnb nne nni nnm nnn nns nnt nsa nsb nse nsi nsm nsn nss nst nta ntb nte nti ntm ntn nts ntt saa sab sae sai sam san sas sat sba sbb sbe sbi sbm sbn sbs sbt se- sea seb see sei sem sen ses set sia sib sie sii sim sin sis sit sma smb sme smi smm smn sms smt sna snb sne sni snm snn sns snt ss- ssa ssb sse ssi ssm ssn sss sst sta stb ste sti stm stn sts stt taa tab tae tai tam tan tas tat tba tbb tbe tbi tbm tbn tbs tbt te- tea teb tee tei tem ten tes tet tia tib tie tii tim tin tis tit tma tmb tme tmi tmm tmn tms tmt tna tnb tne tni tnm tnn tns tnt tsa tsb tse tsi tsm tsn tss tst tta ttb tte tti ttm ttn tts ttt