-ic a-a a-b a-c a-i aaa aab aac aae aah aai aam aan ab- aba abb abc abe abh abi abm abn ac- aca acb acc ace ach aci acm acn aea aeb aec aee aeh aei aem aen aha ahb ahc ahe ahh ahi ahm ahn ai- aia aib aic aie aih aii aim ain ama amb amc ame amh ami amm amn an- ana anb anc ane anh ani anm ann baa bab bac bae bah bai bam ban bba bbb bbc bbe bbh bbi bbm bbn bca bcb bcc bce bch bci bcm bcn be- bea beb bec bee beh bei bem ben bha bhb bhc bhe bhh bhi bhm bi- bia bib bic bie bih bii bim bin bma bmb bmc bme bmh bmi bmm bmn bna bnb bnc bne bni bnn c-- caa cab cac cae cah cai cam can cba cbb cbc cbe cbh cbi cbm cbn cca ccb ccc cce cch cci ccm ccn ce- cea ceb cec cee ceh cei cem cen ch- cha chb chc che chh chi chm chn ci- cia cib cic cie cih cii cim cin cma cmb cmc cme cmh cmi cmm cmn cn- cna cnb cnc cne cnh cni cnm cnn eaa eab eac eae eah eai eam ean eba ebb ebc ebe ebh ebi ebm ebn ec- eca ecb ecc ece ech eci ecm ecn eea eeb eec eee eem een eha ehb ehc ehe ehh ehi ehm ehn eia eib eic eie eii eim ein em- ema emb emc eme emh emi emm emn en- ena enb enc ene enh eni enm enn h-i haa hab hac hae hah hai ham han hba hbb hbc hbe hbh hbi hbm hbn hca hcb hcc hce hch hci hcm hcn he- hea heb hec hee heh hei hem hen hha hhb hhc hhe hhh hhi hhm hhn hia hib hic hie hih hii him hin hma hmb hmc hme hmh hmi hmm hna hnb hnc hne hnh hnn ia- iaa iab iac iae iah iai iam ian iba ibb ibc ibe ibh ibi ibm ibn ica icb icc ice ich ici icm icn ie- iea iec iee iei iem ien iha ihb ihc ihe ihh ihi ihm ihn iia iib iic iie iih iii iim iin im- ima imb imc ime imh imi imm imn in- ina inb inc ine inh ini inm inn maa mab mac mae mah mai mam man mba mbb mbc mbe mbh mbi mbm mc- mca mcb mcc mce mch mci mcm mcn mea meb mec mee meh mei mem men mha mhc mhh mhi mhm mhn mi- mia mib mic mie mih mii mim min mma mmb mmc mme mmh mmi mmm mmn mna mnb mnc mne mni mnm mnn n-i naa nab nac nae nah nai nam nan nba nbb nbc nbe nbi nbm nbn nca ncb ncc nce nch nci ncm ncn ne- nea neb nec nee neh nei nem nen nha nhb nhc nhe nhh nhi nhm nhn nia nib nic nie nih nii nim nin nma nmb nmc nme nmh nmi nmm nmn nna nnb nnc nne nnh nni nnm nnn