-er -ic a-a a-b a-c a-i aaa aab aac aae aah aai aap aar aas ab- aba abb abc abe abh abi abp abr abs ac- aca acb acc ace ach aci acp acr acs aea aeb aec aee aeh aei aep aer aes aha ahb ahc ahe ahh ahi ahp ahr ahs ai- aia aib aic aie aih aii aip air ais ap- apa apb apc ape aph api app apr aps ar- ara arb arc are arh ari arp arr ars as- asa asb asc ase ash asi asp asr ass b-p baa bab bac bae bah bai bap bar bas bba bbb bbc bbe bbh bbi bbp bbr bbs bca bcb bcc bce bch bci bcp bcr bcs be- bea beb bec bee beh bei bep ber bes bha bhb bhc bhe bhh bhi bhp bhr bhs bi- bia bib bic bie bih bii bip bir bis bpa bpb bpc bpe bph bpi bpp bpr bps bra brb bre brh bri brp brr brs bsa bsb bsc bse bsh bsi bsp bsr bss c-- caa cab cac cae cah cai cap car cas cba cbb cbc cbe cbh cbi cbp cbr cbs cca ccb ccc cce cch cci ccp ccr ccs ce- cea ceb cec cee ceh cei cep cer ces ch- cha chb chc che chh chi chp chr chs ci- cia cib cic cie cih cii cip cir cis cpa cpb cpc cpe cph cpi cpp cpr cps cra crb crc cre crh cri crp crr crs csa csb csc cse csh csi csp csr css eaa eab eac eae eah eai eap ear eas eba ebb ebc ebe ebh ebi ebp ebr ebs ec- eca ecb ecc ece ech eci ecr ecs eea eeb eec eee eep eer ees eha ehb ehc ehe ehh ehi ehp ehr ehs eia eib eic eie eii eip eir eis ep- epa epb epc epe eph epi epp epr eps era erb erc ere erh eri erp err ers es- esa esb esc ese esh esi esp esr ess h-i haa hab hac hae hah hai hap har has hba hbb hbc hbe hbh hbi hbp hbr hbs hca hcb hcc hce hch hci hcp hcr hcs he- hea heb hec hee heh hei hep her hes hha hhb hhc hhe hhh hhi hhp hhr hhs hia hib hic hie hih hii hip hir his hpa hpb hpc hpe hph hpi hpp hpr hps hr- hra hrb hrc hre hrh hri hrp hrr hrs hsa hsb hsc hse hsh hsi hsp hsr hss ia- iaa iab iac iae iah iai iap iar ias iba ibb ibc ibe ibh ibi ibp ibr ibs ica icb icc ice ich ici icp icr ics ie- iea iec iee iei iep ier ies iha ihb ihc ihe ihh ihi ihp ihr ihs iia iib iic iie iih iii iip iir iis ipa ipb ipc ipe ipi ipp ipr ips ir- ira irb irc ire iri irp irr irs is- isa isb isc ise ish isi isp isr iss p-p paa pab pac pae pah pai pap par pas pba pbb pbc pbe pbi pbp pbr pbs pca pcb pcc pce pch pci pcp pcr pcs pea peb pec pee peh pei pep per pes pha phb phc phe phi php phr phs pia pib pic pie pih pii pip pir pis ppa ppb ppc ppe pph ppi ppp ppr pps pra prb prc pre prh pri prp prr prs ps- psa psb psc pse psh psi psp psr pss ra- raa rab rac rae rah rai rap rar ras rba rbb rbc rbe rbh rbi rbp rbr rbs rca rcb rcc rce rch rci rcp rcr rcs re- rea reb rec ree reh rei rep rer res rh- rha rhb rhc rhe rhh rhi rhp rhr rhs ria rib ric rie rih rii rip rir ris rpa rpb rpc rpe rph rpi rpp rpr rps rra rrb rrc rrh rri rrp rrr rrs rsa rsb rsc rse rsh rsi rsp rsr rss saa sab sac sae sah sai sap sar sas sba sbb sbc sbe sbh sbi sbp sbr sbs sca scb scc sce sch sci scp scr scs se- sea seb sec see seh sei sep ser ses sh- sha shb shc she shh shi shp shr shs sia sib sic sie sih sii sip sir sis spa spb spc spe sph spi spp spr sps sr- sra srb src sre srh sri srp srr srs ss- ssa ssb ssc sse ssh ssi ssp ssr sss