-ic a-a a-b a-c a-i a-t aaa aab aac aae aag aai aam aan aao aat ab- aba abb abc abe abg abi abm abn abo abt ac- aca acb acc ace acg aci acm acn aco act aea aeb aec aee aeg aei aem aen aeo aet ag- aga agb agc age agg agi agm agn ago agt ai- aia aib aic aie aig aii aim ain aio ait ama amb amc ame amg ami amm amn amo amt an- ana anb anc ane ang ani anm ann ano ant aoa aob aoc aoe aog aoi aom aon aoo aot at- ata atb atc ate atg ati atm atn ato att baa bab bac bae bag bai bam ban bao bat bba bbb bbc bbe bbg bbi bbm bbn bbo bbt bca bcb bcc bce bcg bci bcm bcn bco bct be- bea beb bec bee beg bei bem ben beo bet bga bgb bgc bge bgg bgi bgm bgn bgo bgt bi- bia bib bic bie big bii bim bin bio bit bma bmb bmc bme bmg bmi bmm bmn bmo bmt bna bnb bnc bne bng bni bnn bno bnt boa bob boc boe bog boi bom bon boo bot bta btb btc bte btg bti btm btn bto btt c-- caa cab cac cae cag cai cam can cao cat cba cbb cbc cbe cbg cbi cbm cbn cbo cbt cca ccb ccc cce ccg cci ccm ccn cco cct ce- cea ceb cec cee ceg cei cem cen ceo cet cga cgb cgc cge cgg cgi cgm cgn cgo cgt ci- cia cib cic cie cig cii cim cin cio cit cma cmb cmc cme cmg cmi cmm cmn cmo cmt cn- cna cnb cnc cne cng cni cnm cnn cno cnt co- coa cob coc coe cog coi com con coo cot cta ctb ctc cte ctg cti ctm ctn cto ctt eaa eab eac eae eag eai eam ean eao eat eba ebb ebc ebe ebg ebi ebm ebn ebo ebt ec- eca ecb ecc ece ecg eci ecm ecn eco ect eea eeb eec eee eeg eem een eeo eet ega egb egc ege egg egi egm egn ego egt eia eib eic eie eig eii eim ein eio eit em- ema emb emc eme emg emi emm emn emo emt en- ena enb enc ene eng eni enm enn eno ent eo- eoa eob eoc eoe eog eoi eom eon eoo eot eta etb etc ete etg eti etm etn eto ett gaa gab gac gae gag gai gam gan gao gat gba gbc gbe gbg gbi gbm gbn gbo gbt gca gcb gcc gce gcg gci gcm gcn gco gct ge- gea geb gec gee geg gei gem gen geo get gga ggb ggc ggg ggi ggm ggn ggo ggt gia gib gic gie gig gii gim gin gio git gma gmb gmc gme gmg gmi gmm gmn gmo gmt gna gnb gnc gne gni gnm gnn gno gnt goa gob goc goe gog goi gom gon goo got gta gtb gtc gte gtg gti gtm gtn gto gtt ia- iaa iab iac iae iag iai iam ian iao iat iba ibb ibc ibe ibg ibi ibm ibn ibo ibt ica icb icc ice icg ici icm icn ico ict ie- iea iec iee ieg iei iem ien iet iga igb igc ige igg igi igm ign igo igt iia iib iic iie iii iim iin iio iit im- ima imb imc ime img imi imm imn imo imt in- ina inb inc ine ing ini inm inn ino int io- ioa iob ioc ioe iog ioi iom ion ioo iot ita itb itc ite itg iti itm itn ito itt m-o maa mab mac mae mag mai mam man mao mat mba mbb mbc mbe mbg mbi mbm mbo mbt mc- mca mcb mcc mce mcg mci mcm mcn mco mct mea meb mec mee meg mei mem men meo met mga mgb mgc mge mgi mgm mgn mgo mgt mi- mia mib mic mie mig mii mim min mio mit mma mmb mmc mme mmg mmi mmm mmn mmo mmt mna mnb mnc mne mng mni mnm mnn mno mnt moa mob moc moe mog moi mom mon moo mot mta mtb mtc mte mtg mti mtm mtn mto mtt n-i naa nab nac nae nag nai nam nan nao nat nba nbb nbc nbe nbg nbi nbm nbn nbo nbt nca ncb ncc nce ncg nci ncm ncn nco nct ne- nea neb nec nee neg nei nem nen neo net nga ngb ngc nge ngg ngi ngm ngn ngo ngt nia nib nic nie nig nii nim nin nio nit nma nmb nmc nme nmg nmi nmm nmn nmo nmt nna nnb nnc nne nng nni nnm nnn nno nnt no- noa nob noc noe nog noi nom non noo not nta ntb ntc nte ntg nti ntm ntn nto ntt o-i oaa oab oac oae oag oai oam oan oao oat ob- oba obb obc obe obg obi obm obn obo obt oc- oca ocb occ ocg oci ocm ocn oco oct oea oeb oec oee oeg oei oem oen oeo oet oga ogc oge ogg ogi ogn ogo ogt oia oib oic oie oii oim oin oio oit om- oma omb omc ome omg omi omm omn omo omt on- ona onb onc one ong oni onn ono ont oo- ooa oob ooc oog ooi oom oon ooo oot ot- ota otb otc ote otg oti otm otn oto ott taa tab tac tae tag tai tam tan tao tat tba tbb tbc tbe tbg tbi tbm tbn tbo tbt tca tcb tcc tce tcg tci tcm tcn tco tct te- tea teb tec tee teg tei tem ten teo tet tga tgb tgc tge tgg tgi tgm tgn tgo tgt tia tib tic tie tig tii tim tin tio tit tma tmb tmc tme tmg tmi tmm tmn tmo tmt tna tnb tnc