-ic a-a a-b a-c a-i a-t aaa aab aac aae aag aai aam aan aas aat ab- aba abb abc abe abg abi abm abn abs abt ac- aca acb acc ace acg aci acm acn acs act aea aeb aec aee aeg aei aem aen aes aet ag- aga agb agc age agg agi agm agn ags agt ai- aia aib aic aie aig aii aim ain ais ait ama amb amc ame amg ami amm amn ams amt an- ana anb anc ane ang ani anm ann ans ant as- asa asb asc ase asg asi asm asn ass ast at- ata atb atc ate atg ati atm atn ats att baa bab bac bae bag bai bam ban bas bat bba bbb bbc bbe bbg bbi bbm bbn bbs bbt bca bcb bcc bce bcg bci bcm bcn bcs bct be- bea beb bec bee beg bei bem ben bes bet bga bgb bgc bge bgg bgi bgm bgn bgs bgt bi- bia bib bic bie big bii bim bin bis bit bma bmb bmc bme bmg bmi bmm bmn bms bmt bna bnb bnc bne bng bni bnn bns bnt bsa bsb bsc bse bsg bsi bsm bsn bss bst bta btb btc bte btg bti btm btn bts btt c-- caa cab cac cae cag cai cam can cas cat cba cbb cbc cbe cbg cbi cbm cbn cbs cbt cca ccb ccc cce ccg cci ccm ccn ccs cct ce- cea ceb cec cee ceg cei cem cen ces cet cga cgb cgc cge cgg cgi cgm cgn cgs cgt ci- cia cib cic cie cig cii cim cin cis cit cma cmb cmc cme cmg cmi cmm cmn cms cmt cn- cna cnb cnc cne cng cni cnm cnn cns cnt csa csb csc cse csg csi csm csn css cst cta ctb ctc cte ctg cti ctm ctn cts ctt eaa eab eac eae eag eai eam ean eas eat eba ebb ebc ebe ebg ebi ebm ebn ebs ebt ec- eca ecb ecc ece ecg eci ecm ecn ecs ect eea eeb eec eee eeg eem een ees eet ega egb egc ege egg egi egm egn egs egt eia eib eic eie eig eii eim ein eis eit em- ema emb emc eme emg emi emm emn ems emt en- ena enb enc ene eng eni enm enn ens ent es- esa esb esc ese esg esi esm esn ess est eta etb etc ete etg eti etm etn ets ett gaa gab gac gae gag gai gam gan gas gat gba gbc gbe gbg gbi gbm gbn gbs gbt gca gcb gcc gce gcg gci gcm gcn gcs gct ge- gea geb gec gee geg gei gem gen ges get gga ggb ggc ggg ggi ggm ggn ggs ggt gia gib gic gie gig gii gim gin gis git gma gmb gmc gme gmg gmi gmm gmn gms gmt gna gnb gnc gne gni gnm gnn gns gnt gsa gsb gsc gse gsg gsi gsm gsn gss gst gta gtb gtc gte gtg gti gtm gtn gts gtt ia- iaa iab iac iae iag iai iam ian ias iat iba ibb ibc ibe ibg ibi ibm ibn ibs ibt ica icb icc ice icg ici icm icn ics ict ie- iea iec iee ieg iei iem ien ies iet iga igb igc ige igg igi igm ign igs igt iia iib iic iie iii iim iin iis iit im- ima imb imc ime img imi imm imn ims imt in- ina inb inc ine ing ini inm inn ins int is- isa isb isc ise isg isi ism isn iss ist ita itb itc ite itg iti itm itn its itt maa mab mac mae mag mai mam man mas mat mba mbb mbc mbe mbg mbi mbm mbs mbt mc- mca mcb mcc mce mcg mci mcm mcn mcs mct mea meb mec mee meg mei mem men mes met mga mgb mgc mge mgi mgm mgn mgs mgt mi- mia mib mic mie mig mii mim min mis mit mma mmb mmc mme mmg mmi mmm mmn mms mmt mna mnb mnc mne mng mni mnm mnn mns mnt msa msb msc mse msg msi msm msn mss mst mta mtb mtc mte mtg mti mtm mtn mts mtt n-i naa nab nac nae nag nai nam nan nas nat nba nbb nbc nbe nbg nbi nbm nbn nbs nbt nca ncb ncc nce ncg nci ncm ncn ncs nct ne- nea neb nec nee neg nei nem nen nes net nga ngb ngc nge ngg ngi ngm ngn ngs ngt nia nib nic nie nig nii nim nin nis nit nma nmb nmc nme nmg nmi nmm nmn nms nmt nna nnb nnc nne nng nni nnm nnn nns nnt nsa nsb nsc nse nsg nsi nsm nsn nss nst nta ntb ntc nte ntg nti ntm ntn nts ntt saa sab sac sae sag sai sam san sas sat sba sbb sbc sbe sbg sbi sbm sbn sbs sbt sca scb scc sce scg sci scm scn scs sct se- sea seb sec see seg sei sem sen ses set sga sgb sgc sge sgg sgi sgm sgn sgs sgt sia sib sic sie sig sii sim sin sis sit sma smb smc sme smg smi smm smn sms smt sna snb snc sne sng sni snm snn sns snt ss- ssa ssb ssc sse ssg ssi ssm ssn sss sst sta stb stc ste stg sti stm stn sts stt taa tab tac tae tag tai tam tan tas tat tba tbb tbc tbe tbg tbi tbm tbn tbs tbt tca tcb tcc tce tcg tci tcm tcn tcs tct te- tea teb tec tee teg tei tem ten tes tet tga tgb tgc tge tgg tgi tgm tgn tgs tgt tia tib tic tie tig tii tim tin tis tit tma tmb tmc tme tmg tmi tmm tmn tms tmt tna tnb tnc