-er -ic a-a a-b a-c a-i aaa aab aac aae aah aai aar aas ab- aba abb abc abe abh abi abr abs ac- aca acb acc ace ach aci acr acs aea aeb aec aee aeh aei aer aes aha ahb ahc ahe ahh ahi ahr ahs ai- aia aib aic aie aih aii air ais ar- ara arb arc are arh ari arr ars as- asa asb asc ase ash asi asr ass baa bab bac bae bah bai bar bas bba bbb bbc bbe bbh bbi bbr bbs bca bcb bcc bce bch bci bcr bcs be- bea beb bec bee beh bei ber bes bha bhb bhc bhe bhh bhi bhr bhs bi- bia bib bic bie bih bii bir bis bra brb bre brh bri brr brs bsa bsb bsc bse bsh bsi bsr bss c-- caa cab cac cae cah cai car cas cba cbb cbc cbe cbh cbi cbr cbs cca ccb ccc cce cch cci ccr ccs ce- cea ceb cec cee ceh cei cer ces ch- cha chb chc che chh chi chr chs ci- cia cib cic cie cih cii cir cis cra crb crc cre crh cri crr crs csa csb csc cse csh csi csr css eaa eab eac eae eah eai ear eas eba ebb ebc ebe ebh ebi ebr ebs ec- eca ecb ecc ece ech eci ecr ecs eea eeb eec eee eer ees eha ehb ehc ehe ehh ehi ehr ehs eia eib eic eie eii eir eis era erb erc ere erh eri err ers es- esa esb esc ese esh esi esr ess h-i haa hab hac hae hah hai har has hba hbb hbc hbe hbh hbi hbr hbs hca hcb hcc hce hch hci hcr hcs he- hea heb hec hee heh hei her hes hha hhb hhc hhe hhh hhi hhr hhs hia hib hic hie hih hii hir his hr- hra hrb hrc hre hrh hri hrr hrs hsa hsb hsc hse hsh hsi hsr hss ia- iaa iab iac iae iah iai iar ias iba ibb ibc ibe ibh ibi ibr ibs ica icb icc ice ich ici icr ics ie- iea iec iee iei ier ies iha ihb ihc ihe ihh ihi ihr ihs iia iib iic iie iih iii iir iis ir- ira irb irc ire iri irr irs is- isa isb isc ise ish isi isr iss ra- raa rab rac rae rah rai rar ras rba rbb rbc rbe rbh rbi rbr rbs rca rcb rcc rce rch rci rcr rcs re- rea reb rec ree reh rei rer res rh- rha rhb rhc rhe rhh rhi rhr rhs ria rib ric rie rih rii rir ris rra rrb rrc rrh rri rrr rrs rsa rsb rsc rse rsh rsi rsr rss saa sab sac sae sah sai sar sas sba sbb sbc sbe sbh sbi sbr sbs sca scb scc sce sch sci scr scs se- sea seb sec see seh sei ser ses sh- sha shb shc she shh shi shr shs sia sib sic sie sih sii sir sis sr- sra srb src sre srh sri srr srs ss- ssa ssb ssc sse ssh ssi ssr sss