a-a a-b a-c aaa aab aac aad aae aah aam aan ab- aba abb abc abd abe abh abm abn ac- aca acb acc acd ace ach acm acn ad- ada adb adc add ade adh adm adn aea aeb aec aed aee aeh aem aen aha ahb ahc ahd ahe ahh ahm ahn ama amb amc amd ame amh amm amn an- ana anb anc and ane anh anm ann baa bab bac bad bae bah bam ban bba bbb bbc bbd bbe bbh bbm bbn bca bcb bcc bcd bce bch bcm bcn bda bdb bdc bdd bde bdh bdm be- bea beb bec bed bee beh bem ben bha bhb bhc bhd bhe bhh bhm bma bmb bmc bmd bme bmh bmm bmn bna bnb bnc bnd bne bnn c-- caa cab cac cad cae cah cam can cba cbb cbc cbd cbe cbh cbm cbn cca ccb ccc ccd cce cch ccm ccn cda cdb cdc cdd cde cdh cdm cdn ce- cea ceb cec ced cee ceh cem cen ch- cha chb chc chd che chh chm chn cma cmb cmc cmd cme cmh cmm cmn cn- cna cnb cnc cnd cne cnh cnm cnn daa dab dac dad dae dah dam dan dba dbb dbc dbd dbe dbh dbm dbn dca dcb dcc dcd dce dcm dcn dda ddb ddc ddd dde ddh ddm ddn de- dea deb dec ded dee deh dem den dh- dha dhb dhc dhd dhe dhh dhm dma dmb dmc dmd dme dmh dmm dmn dna dnb dnc dnd dne dnh dnm dnn eaa eab eac ead eae eah eam ean eba ebb ebc ebd ebe ebh ebm ebn ec- eca ecb ecc ecd ece ech ecm ecn ed- eda edb edc edd ede edh edm edn eea eeb eec eed eee eem een eha ehb ehc ehd ehe ehh ehm ehn em- ema emb emc emd eme emh emm emn en- ena enb enc end ene enh enm enn haa hab hac had hae hah ham han hba hbb hbc hbd hbe hbh hbm hbn hca hcb hcc hcd hce hch hcm hcn hda hdb hdc hdd hde hdh hdm hdn he- hea heb hec hed hee heh hem hen hha hhb hhc hhd hhe hhh hhm hhn hma hmb hmc hmd hme hmh hmm hna hnb hnc hnd hne hnh hnn maa mab mac mad mae mah mam man mba mbb mbc mbd mbe mbh mbm mc- mca mcb mcc mcd mce mch mcm mcn mda mdb mdc mdd mde mdh mdm mdn mea meb mec med mee meh mem men mha mhc mhd mhh mhm mhn mma mmb mmc mmd mme mmh mmm mmn mna mnb mnc mne mnm mnn naa nab nac nad nae nah nam nan nba nbb nbc nbd nbe nbm nbn nca ncb ncc ncd nce nch ncm ncn nda ndb ndc ndd nde ndh ndm ndn ne- nea neb nec ned nee neh nem nen nha nhb nhc nhd nhe nhh nhm nhn nma nmb nmc nmd nme nmh nmm nmn nna nnb nnc nne nnh nnm nnn