-er b-p bbb bbe bbg bbi bbn bbp bbr bbs be- beb bee beg bei ben bep ber bes bgb bge bgg bgi bgn bgp bgr bgs bi- bib bie big bii bin bip bir bis bnb bne bng bni bnn bnp bnr bns bpb bpe bpg bpi bpn bpp bpr bps brb bre brg bri brn brp brr brs bsb bse bsg bsi bsn bsp bsr bss ebb ebe ebg ebi ebn ebp ebr ebs eeb eee eeg een eep eer ees egb ege egg egi egn egp egr egs eib eie eig eii ein eip eir eis en- enb ene eng eni enn enp enr ens ep- epb epe epg epi epn epp epr eps erb ere erg eri ern erp err ers es- esb ese esg esi esn esp esr ess g-p gbe gbg gbi gbn gbp gbr gbs ge- geb gee geg gei gen gep ger ges ggb ggg ggi ggn ggp ggr ggs gib gie gig gii gin gip gir gis gnb gne gni gnn gnp gnr gns gpb gpe gpg gpi gpn gpp gpr gps grb gre grg gri grn grp grr grs gsb gse gsg gsi gsn gsp gsr gss ibb ibe ibg ibi ibn ibp ibr ibs ie- iee ieg iei ien iep ier ies igb ige igg igi ign igp igr igs iib iie iii iin iip iir iis in- inb ine ing ini inn inp inr ins ipb ipe ipg ipi ipn ipp ipr ips ir- irb ire irg iri irn irp irr irs is- isb ise isg isi isn isp isr iss n-i nbb nbe nbg nbi nbn nbp nbr nbs ne- neb nee neg nei nen nep ner nes ngb nge ngg ngi ngn ngp ngs nib nie nig nii nin nip nir nis nnb nne nng nni nnn nnp nns npb npe npg npi npn npp npr nps nrb nre nrg nri nrn nrp nrr nrs nsb nse nsg nsi nsn nsp nsr nss p-p pbb pbe pbg pbi pbn pbp pbr pbs peb pee peg pei pen pep per pes pgb pge pgg pgi pgn pgp pgr pgs pib pie pig pii pin pip pir pis pn- pnb pne png pni pnn pnp pnr pns ppb ppe ppg ppi ppn ppp ppr pps prb pre prg pri prn prp prr prs ps- psb pse psg psi psn psp psr pss rbb rbe rbg rbi rbn rbp rbr rbs re- reb ree reg rei ren rep rer res rgb rge rgg rgi rgn rgp rgr rgs rib rie rig rii rin rip rir ris rnb rng rni rnn rnp rnr rns rpb rpe rpg rpi rpn rpp rpr rps rrb rrg rri rrn rrp rrr rrs rsb rse rsg rsi rsn rsp rsr rss sbb sbe sbg sbi sbn sbp sbr sbs se- seb see seg sei sen sep ser ses sgb sge sgg sgi sgn sgp sgr sgs sib sie sig sii sin sip sir sis snb sne sng sni snn snp snr sns spb spe spg spi spn spp spr sps sr- srb sre srg sri srn srp srr srs ss- ssb sse ssg ssi ssn ssp ssr sss