-er -ic a-a a-b a-c a-i aaa aab aac aae aah aai aam aao aar ab- aba abb abc abe abh abi abm abo abr ac- aca acb acc ace ach aci acm aco acr aea aeb aec aee aeh aei aem aeo aer aha ahb ahc ahe ahh ahi ahm aho ahr ai- aia aib aic aie aih aii aim aio air ama amb amc ame amh ami amm amo amr aoa aob aoc aoe aoh aoi aom aoo aor ar- ara arb arc are arh ari arm aro arr baa bab bac bae bah bai bam bao bar bba bbb bbc bbe bbh bbi bbm bbo bbr bca bcb bcc bce bch bci bcm bco bcr be- bea beb bec bee beh bei bem beo ber bha bhb bhc bhe bhh bhi bhm bho bhr bi- bia bib bic bie bih bii bim bio bir bma bmb bmc bme bmh bmi bmm bmo bmr boa bob boc boe boh boi bom boo bor bra brb bre brh bri brm bro brr c-- caa cab cac cae cah cai cam cao car cba cbb cbc cbe cbh cbi cbm cbo cbr cca ccb ccc cce cch cci ccm cco ccr ce- cea ceb cec cee ceh cei cem ceo cer ch- cha chb chc che chh chi chm cho chr ci- cia cib cic cie cih cii cim cio cir cma cmb cmc cme cmh cmi cmm cmo cmr co- coa cob coc coe coh coi com coo cor cra crb crc cre crh cri crm cro crr eaa eab eac eae eah eai eam eao ear eba ebb ebc ebe ebh ebi ebm ebo ebr ec- eca ecb ecc ece ech eci ecm eco ecr eea eeb eec eee eem eeo eer eha ehb ehc ehe ehh ehi ehm eho ehr eia eib eic eie eii eim eio eir em- ema emb emc eme emh emi emm emo emr eo- eoa eob eoc eoe eoh eoi eom eoo eor era erb erc ere erh eri erm ero err h-i haa hab hac hae hah hai ham hao har hba hbb hbc hbe hbh hbi hbm hbo hbr hca hcb hcc hce hch hci hcm hco hcr he- hea heb hec hee heh hei hem heo her hha hhb hhc hhe hhh hhi hhm hho hhr hia hib hic hie hih hii him hio hir hma hmb hmc hme hmh hmi hmm hmo hmr hoa hob hoc hoe hoh hoi hom hoo hor hr- hra hrb hrc hre hrh hri hrm hro hrr ia- iaa iab iac iae iah iai iam iao iar iba ibb ibc ibe ibh ibi ibm ibo ibr ica icb icc ice ich ici icm ico icr ie- iea iec iee iei iem ier iha ihb ihc ihe ihh ihi ihm iho ihr iia iib iic iie iih iii iim iio iir im- ima imb imc ime imh imi imm imo io- ioa iob ioc ioe ioh ioi iom ioo ior ir- ira irb irc ire iri irm iro irr m-o m-r maa mab mac mae mah mai mam mao mar mba mbb mbc mbe mbh mbi mbm mbo mbr mc- mca mcb mcc mce mch mci mcm mco mcr mea meb mec mee meh mei mem meo mer mha mhc mhh mhi mhm mho mhr mi- mia mib mic mie mih mii mim mio mir mma mmb mmc mme mmh mmi mmm mmo mmr moa mob moc moe moh moi mom moo mor mra mrb mrc mre mrh mri mrm mro mrr o-i oaa oab oac oae oah oai oam oao oar ob- oba obb obc obe obh obi obm obo obr oc- oca ocb occ och oci ocm oco ocr oea oeb oec oee oeh oei oem oeo oer oha ohc ohe ohh ohi ohm oho ohr oia oib oic oie oii oim oio oir om- oma omb omc ome omh omi omm omo omr oo- ooa oob ooc ooh ooi oom ooo oor or- ora orb orc ore orh ori orm oro orr ra- raa rab rac rae rah rai ram rao rar rba rbb rbc rbe rbh rbi rbm rbo rbr rca rcb rcc rce rch rci rcm rco rcr re- rea reb rec ree reh rei rem reo rer rh- rha rhb rhc rhe rhh rhi rhm rho rhr ria rib ric rie rih rii rim rio rir rma rmb rmc rme rmh rmi rmm rmo rmr roa rob roc roe roh roi rom roo ror rra rrb rrc rrh rri rrm rrr