-er b-p bbb bbe bbg bbi bbp bbr bbs bbt be- beb bee beg bei bep ber bes bet bez bgb bge bgg bgi bgp bgr bgs bgt bgz bi- bib bie big bii bip bir bis bit biz bpb bpe bpg bpi bpp bpr bps bpt brb bre brg bri brp brr brs brt brz bsb bse bsg bsi bsp bsr bss bst btb bte btg bti btp btr bts btt btz bze bzp bzr bzs bzz ebb ebe ebg ebi ebp ebr ebs ebt eeb eee eeg eep eer ees eet egb ege egg egi egp egr egs egt eib eie eig eii eip eir eis eit ep- epb epe epg epi epp epr eps ept epz erb ere erg eri erp err ers ert erz es- esb ese esg esi esp esr ess est etb ete etg eti etp etr ets ett etz eze ezr ezs ezz g-p gbe gbg gbi gbp gbr gbs gbt gbz ge- geb gee geg gei gep ger ges get gez ggb ggg ggi ggp ggr ggs ggt ggz gib gie gig gii gip gir gis git giz gpb gpe gpg gpi gpp gpr gps gpt gpz grb gre grg gri grp grr grs grt gsb gse gsg gsi gsp gsr gss gst gtb gte gtg gti gtp gtr gts gtt gzp gzr ibb ibe ibg ibi ibp ibr ibs ibt ibz ie- iee ieg iei iep ier ies iet igb ige igg igi igp igr igs igt iib iie iii iip iir iis iit ipb ipe ipg ipi ipp ipr ips ipt ir- irb ire irg iri irp irr irs irt is- isb ise isg isi isp isr iss ist itb ite itg iti itp its itt itz ize izi izz p-p pbb pbe pbg pbi pbp pbr pbs pbt pbz peb pee peg pei pep per pes pet pez pgb pge pgg pgi pgp pgr pgs pgt pib pie pig pii pip pir pis pit piz ppb ppe ppg ppi ppp ppr pps ppt ppz prb pre prg pri prp prr prs prt prz ps- psb pse psg psi psp psr pss pst pt- ptb pte ptg pti ptp ptr pts ptt ptz pzp pzt rbb rbe rbg rbi rbp rbr rbs rbt re- reb ree reg rei rep rer res ret rez rgb rge rgg rgi rgp rgr rgs rgt rib rie rig rii rip rir ris rit riz rpb rpe rpg rpi rpp rpr rps rpt rpz rrb rrg rri rrp rrr rrs rrt rsb rse rsg rsi rsp rsr rss rst rtb rte rtg rti rtp rtr rts rtt rtz rzb rze sbb sbe sbg sbi sbp sbr sbs sbt se- seb see seg sei sep ser ses set sez sgb sge sgg sgi sgp sgr sgs sgt sib sie sig sii sip sir sis sit spb spe spg spi spp spr sps spt spz sr- srb sre srg sri srp srr srs srt ss- ssb sse ssg ssi ssp ssr sss sst ssz stb ste stg sti stp str sts stt stz sze szi szp szr tbb tbe tbg tbi tbp tbr tbs tbt tbz te- teb tee teg tei tep ter tes tet tez tgb tge tgg tgi tgp tgr tgs tgt tgz tib tie tig tii tip tir tis tit tiz tpb tpe tpg tpi tpp tpr tps tpt tpz trb tre trg tri trp trr trs trt trz tsb tse tsg tsi tsp tsr tss tst ttb tte ttg tti ttp ttr tts ttt tze tzs z-g zbb zbr zbs zbt zeb zee zep zer zes zet zez zgb zgg zgi zgs zib zie zig zip zir zis zit ziz zpe zpg zpi zpp zpr zpt zrp zrs zse zsg zsi zst zsz zte ztr zzr zzs zzt zzz