a-a a-b a-i a-t aaa aab aai aam aan aao aas aat ab- aba abb abi abm abn abo abs abt ai- aia aib aii aim ain aio ais ait ama amb ami amm amn amo ams amt an- ana anb ani anm ann ano ans ant aoa aob aoi aom aon aoo aos aot as- asa asb asi asm asn aso ass ast at- ata atb ati atm atn ato ats att baa bab bai bam ban bao bas bat bba bbb bbi bbm bbn bbo bbs bbt bi- bia bib bii bim bin bio bis bit bma bmb bmi bmm bmn bmo bms bmt bna bnb bni bnn bno bns bnt boa bob boi bom bon boo bos bot bsa bsb bsi bsm bsn bso bss bst bta btb bti btm btn bto bts btt ia- iaa iab iai iam ian iao ias iat iba ibb ibi ibm ibn ibo ibs ibt iia iib iii iim iin iio iis iit im- ima imb imi imm imn imo ims imt in- ina inb ini inm inn ino ins int io- ioa iob ioi iom ion ioo ios iot is- isa isb isi ism isn iso iss ist ita itb iti itm itn ito its itt m-o maa mab mai mam man mao mas mat mba mbb mbi mbm mbo mbs mbt mi- mia mib mii mim min mio mis mit mma mmb mmi mmm mmn mmo mms mmt mna mnb mni mnm mnn mno mns mnt moa mob moi mom mon moo mos mot msa msb msi msm msn mso mss mst mta mtb mti mtm mtn mto mts mtt n-i naa nab nai nam nan nao nas nat nba nbb nbi nbm nbn nbo nbs nbt nia nib nii nim nin nio nis nit nma nmb nmi nmm nmn nmo nms nmt nna nnb nni nnm nnn nno nns nnt no- noa nob noi nom non noo nos not nsa nsb nsi nsm nsn nso nss nst nta ntb nti ntm ntn nto nts ntt o-i oaa oab oai oam oan oao oas oat ob- oba obb obi obm obn obo obs obt oia oib oii oim oin oio ois oit om- oma omb omi omm omn omo oms omt on- ona onb oni onn ono ons ont oo- ooa oob ooi oom oon ooo oos oot os- osa osb osi osm osn oso oss ost ot- ota otb oti otm otn oto ots ott saa sab sai sam san sao sas sat sba sbb sbi sbm sbn sbo sbs sbt sia sib sii sim sin sio sis sit sma smb smi smm smn smo sms smt sna snb sni snm snn sno sns snt soa sob soi som son soo sos sot ss- ssa ssb ssi ssm ssn sso sss sst sta stb sti stm stn sto sts stt taa tab tai tam tan tao tas tat tba tbb tbi tbm tbn tbo tbs tbt tia tib tii tim tin tio tis tit tma tmb tmi tmm tmn tmo tms tmt tna tnb tni tnm tnn tno tns tnt to- toa tob toi tom ton too tos tot tsa tsb tsi tsm tsn tso tss tst tta ttb tti ttm ttn tto tts ttt