-er a-a a-b aaa aab aae aah aap aar aas ab- aba abb abe abh abp abr abs aea aeb aee aeh aep aer aes aha ahb ahe ahh ahp ahr ahs ap- apa apb ape aph app apr aps ar- ara arb are arh arp arr ars as- asa asb ase ash asp asr ass b-p baa bab bae bah bap bar bas bba bbb bbe bbh bbp bbr bbs be- bea beb bee beh bep ber bes bha bhb bhe bhh bhp bhr bhs bpa bpb bpe bph bpp bpr bps bra brb bre brh brp brr brs bsa bsb bse bsh bsp bsr bss eaa eab eae eah eap ear eas eba ebb ebe ebh ebp ebr ebs eea eeb eee eep eer ees eha ehb ehe ehh ehp ehr ehs ep- epa epb epe eph epp epr eps era erb ere erh erp err ers es- esa esb ese esh esp esr ess haa hab hae hah hap har has hba hbb hbe hbh hbp hbr hbs he- hea heb hee heh hep her hes hha hhb hhe hhh hhp hhr hhs hpa hpb hpe hph hpp hpr hps hr- hra hrb hre hrh hrp hrr hrs hsa hsb hse hsh hsp hsr hss p-p paa pab pae pah pap par pas pba pbb pbe pbp pbr pbs pea peb pee peh pep per pes pha phb phe php phr phs ppa ppb ppe pph ppp ppr pps pra prb pre prh prp prr prs ps- psa psb pse psh psp psr pss ra- raa rab rae rah rap rar ras rba rbb rbe rbh rbp rbr rbs re- rea reb ree reh rep rer res rh- rha rhb rhe rhh rhp rhr rhs rpa rpb rpe rph rpp rpr rps rra rrb rrh rrp rrr rrs rsa rsb rse rsh rsp rsr rss saa sab sae sah sap sar sas sba sbb sbe sbh sbp sbr sbs se- sea seb see seh sep ser ses sh- sha shb she shh shp shr shs spa spb spe sph spp spr sps sr- sra srb sre srh srp srr srs ss- ssa ssb sse ssh ssp ssr sss