-er b-p bbb bbe bbh bbi bbp bbr bbs be- beb bee beh bei bep ber bes bhb bhe bhh bhi bhp bhr bhs bi- bib bie bih bii bip bir bis bpb bpe bph bpi bpp bpr bps brb bre brh bri brp brr brs bsb bse bsh bsi bsp bsr bss ebb ebe ebh ebi ebp ebr ebs eeb eee eep eer ees ehb ehe ehh ehi ehp ehr ehs eib eie eii eip eir eis ep- epb epe eph epi epp epr eps erb ere erh eri erp err ers es- esb ese esh esi esp esr ess h-i hbb hbe hbh hbi hbp hbr hbs he- heb hee heh hei hep her hes hhb hhe hhh hhi hhp hhr hhs hib hie hih hii hip hir his hpb hpe hph hpi hpp hpr hps hr- hrb hre hrh hri hrp hrr hrs hsb hse hsh hsi hsp hsr hss ibb ibe ibh ibi ibp ibr ibs ie- iee iei iep ier ies ihb ihe ihh ihi ihp ihr ihs iib iie iih iii iip iir iis ipb ipe ipi ipp ipr ips ir- irb ire iri irp irr irs is- isb ise ish isi isp isr iss p-p pbb pbe pbi pbp pbr pbs peb pee peh pei pep per pes phb phe phi php phr phs pib pie pih pii pip pir pis ppb ppe pph ppi ppp ppr pps prb pre prh pri prp prr prs ps- psb pse psh psi psp psr pss rbb rbe rbh rbi rbp rbr rbs re- reb ree reh rei rep rer res rh- rhb rhe rhh rhi rhp rhr rhs rib rie rih rii rip rir ris rpb rpe rph rpi rpp rpr rps rrb rrh rri rrp rrr rrs rsb rse rsh rsi rsp rsr rss sbb sbe sbh sbi sbp sbr sbs se- seb see seh sei sep ser ses sh- shb she shh shi shp shr shs sib sie sih sii sip sir sis spb spe sph spi spp spr sps sr- srb sre srh sri srp srr srs ss- ssb sse ssh ssi ssp ssr sss