-er b-p bbb bbe bbg bbi bbn bbp bbr bbs bbt be- beb bee beg bei ben bep ber bes bet bgb bge bgg bgi bgn bgp bgr bgs bgt bi- bib bie big bii bin bip bir bis bit bnb bne bng bni bnn bnp bnr bns bnt bpb bpe bpg bpi bpn bpp bpr bps bpt brb bre brg bri brn brp brr brs brt bsb bse bsg bsi bsn bsp bsr bss bst btb bte btg bti btn btp btr bts btt ebb ebe ebg ebi ebn ebp ebr ebs ebt eeb eee eeg een eep eer ees eet egb ege egg egi egn egp egr egs egt eib eie eig eii ein eip eir eis eit en- enb ene eng eni enn enp enr ens ent ep- epb epe epg epi epn epp epr eps ept erb ere erg eri ern erp err ers ert es- esb ese esg esi esn esp esr ess est etb ete etg eti etn etp etr ets ett g-p gbe gbg gbi gbn gbp gbr gbs gbt ge- geb gee geg gei gen gep ger ges get ggb ggg ggi ggn ggp ggr ggs ggt gib gie gig gii gin gip gir gis git gnb gne gni gnn gnp gnr gns gnt gpb gpe gpg gpi gpn gpp gpr gps gpt grb gre grg gri grn grp grr grs grt gsb gse gsg gsi gsn gsp gsr gss gst gtb gte gtg gti gtn gtp gtr gts gtt ibb ibe ibg ibi ibn ibp ibr ibs ibt ie- iee ieg iei ien iep ier ies iet igb ige igg igi ign igp igr igs igt iib iie iii iin iip iir iis iit in- inb ine ing ini inn inp inr ins int ipb ipe ipg ipi ipn ipp ipr ips ipt ir- irb ire irg iri irn irp irr irs irt is- isb ise isg isi isn isp isr iss ist itb ite itg iti itn itp its itt n-i nbb nbe nbg nbi nbn nbp nbr nbs nbt ne- neb nee neg nei nen nep ner nes net ngb nge ngg ngi ngn ngp ngs ngt nib nie nig nii nin nip nir nis nit nnb nne nng nni nnn nnp nns nnt npb npe npg npi npn npp npr nps npt nrb nre nrg nri nrn nrp nrr nrs nrt nsb nse nsg nsi nsn nsp nsr nss nst ntb nte ntg nti ntn ntp ntr nts ntt p-p pbb pbe pbg pbi pbn pbp pbr pbs pbt peb pee peg pei pen pep per pes pet pgb pge pgg pgi pgn pgp pgr pgs pgt pib pie pig pii pin pip pir pis pit pn- pnb pne png pni pnn pnp pnr pns pnt ppb ppe ppg ppi ppn ppp ppr pps ppt prb pre prg pri prn prp prr prs prt ps- psb pse psg psi psn psp psr pss pst pt- ptb pte ptg pti ptn ptp ptr pts ptt rbb rbe rbg rbi rbn rbp rbr rbs rbt re- reb ree reg rei ren rep rer res ret rgb rge rgg rgi rgn rgp rgr rgs rgt rib rie rig rii rin rip rir ris rit rnb rng rni rnn rnp rnr rns rnt rpb rpe rpg rpi rpn rpp rpr rps rpt rrb rrg rri rrn rrp rrr rrs rrt rsb rse rsg rsi rsn rsp rsr rss rst rtb rte rtg rti rtn rtp rtr rts rtt sbb sbe sbg sbi sbn sbp sbr sbs sbt se- seb see seg sei sen sep ser ses set sgb sge sgg sgi sgn sgp sgr sgs sgt sib sie sig sii sin sip sir sis sit snb sne sng sni snn snp snr sns snt spb spe spg spi spn spp spr sps spt sr- srb sre srg sri srn srp srr srs srt ss- ssb sse ssg ssi ssn ssp ssr sss sst stb ste stg sti stn stp str sts stt tbb tbe tbg tbi tbn tbp tbr tbs tbt te- teb tee teg tei ten tep ter tes tet tgb tge tgg tgi tgn tgp tgr tgs tgt tib tie tig tii tin tip tir tis tit tnb tne tng tni tnn tnp tnr tns tnt tpb tpe tpg tpi tpn tpp tpr tps tpt trb tre trg tri trn trp trr trs trt tsb tse tsg tsi tsn tsp tsr tss tst ttb tte ttg tti ttn ttp ttr tts ttt