-ic a-a a-b a-c a-i aaa aab aac aae aag aai aam aan aax ab- aba abb abc abe abg abi abm abn abx ac- aca acb acc ace acg aci acm acn acx aea aeb aec aee aeg aei aem aen aex ag- aga agb agc age agg agi agm agn agx ai- aia aib aic aie aig aii aim ain aix ama amb amc ame amg ami amm amn amx an- ana anb anc ane ang ani anm ann anx ax- axa axe axi axm axn axx baa bab bac bae bag bai bam ban bax bba bbb bbc bbe bbg bbi bbm bbn bbx bca bcb bcc bce bcg bci bcm bcn bcx be- bea beb bec bee beg bei bem ben bex bga bgb bgc bge bgg bgi bgm bgn bgx bi- bia bib bic bie big bii bim bin bix bma bmb bmc bme bmg bmi bmm bmn bmx bna bnb bnc bne bng bni bnn bnx bxb bxi bxm bxn bxx c-- caa cab cac cae cag cai cam can cax cba cbb cbc cbe cbg cbi cbm cbn cbx cca ccb ccc cce ccg cci ccm ccn ccx ce- cea ceb cec cee ceg cei cem cen cex cga cgb cgc cge cgg cgi cgm cgn ci- cia cib cic cie cig cii cim cin cix cma cmb cmc cme cmg cmi cmm cmn cmx cn- cna cnb cnc cne cng cni cnm cnn cnx cxc cxi cxx eaa eab eac eae eag eai eam ean eax eba ebb ebc ebe ebg ebi ebm ebn ebx ec- eca ecb ecc ece ecg eci ecm ecn ecx eea eeb eec eee eeg eem een eex ega egb egc ege egg egi egm egn egx eia eib eic eie eig eii eim ein eix em- ema emb emc eme emg emi emm emn emx en- ena enb enc ene eng eni enm enn ex- exa exc exe exi exx gaa gab gac gae gag gai gam gan gba gbc gbe gbg gbi gbm gbn gbx gca gcb gcc gce gcg gci gcm gcn ge- gea geb gec gee geg gei gem gen gex gga ggb ggc ggg ggi ggm ggn gia gib gic gie gig gii gim gin gma gmb gmc gme gmg gmi gmm gmn gmx gna gnb gnc gne gni gnm gnn gxa ia- iaa iab iac iae iag iai iam ian iba ibb ibc ibe ibg ibi ibm ibn ibx ica icb icc ice icg ici icm icn ie- iea iec iee ieg iei iem ien iex iga igb igc ige igg igi igm ign iia iib iic iie iii iim iin iix im- ima imb imc ime img imi imm imn imx in- ina inb inc ine ing ini inm inn inx ixc ixe ixi ixn maa mab mac mae mag mai mam man max mba mbb mbc mbe mbg mbi mbm mbx mc- mca mcb mcc mce mcg mci mcm mcn mcx mea meb mec mee meg mei mem men mex mga mgb mgc mge mgi mgm mgn mgx mi- mia mib mic mie mig mii mim min mix mma mmb mmc mme mmg mmi mmm mmn mmx mna mnb mnc mne mng mni mnm mnn mxa mxc mxi mxn n-i naa nab nac nae nag nai nam nan nax nba nbb nbc nbe nbg nbi nbm nbn nbx nca ncb ncc nce ncg nci ncm ncn ncx ne- nea neb nec nee neg nei nem nen nex nga ngb ngc nge ngg ngi ngm ngn nia nib nic nie nig nii nim nin nix nma nmb nmc nme nmg nmi nmm nmn nna nnb nnc nne nng nni nnm nnn nxc xaa xac xag xam xan xbc xbe xbx xcb xci xcx xee xeg xem xen xex xge xgi xia xic xie xii xin xix xma xmc xmg xmi xmm xmx xna xnc xxi xxx