-er b-p bbb bbe bbg bbi bbn bbo bbp bbr bbs bbt be- beb bee beg bei ben beo bep ber bes bet bgb bge bgg bgi bgn bgo bgp bgr bgs bgt bi- bib bie big bii bin bio bip bir bis bit bnb bne bng bni bnn bno bnp bnr bns bnt bob boe bog boi bon boo bop bor bos bot bpb bpe bpg bpi bpn bpo bpp bpr bps bpt brb bre brg bri brn bro brp brr brs brt bsb bse bsg bsi bsn bso bsp bsr bss bst btb bte btg bti btn bto btp btr bts btt ebb ebe ebg ebi ebn ebo ebp ebr ebs ebt eeb eee eeg een eeo eep eer ees eet egb ege egg egi egn ego egp egr egs egt eib eie eig eii ein eio eip eir eis eit en- enb ene eng eni enn eno enp enr ens ent eo- eob eoe eog eoi eon eoo eop eor eos eot ep- epb epe epg epi epn epo epp epr eps ept erb ere erg eri ern ero erp err ers ert es- esb ese esg esi esn eso esp esr ess est etb ete etg eti etn eto etp etr ets ett g-p gbe gbg gbi gbn gbo gbp gbr gbs gbt ge- geb gee geg gei gen geo gep ger ges get ggb ggg ggi ggn ggo ggp ggr ggs ggt gib gie gig gii gin gio gip gir gis git gnb gne gni gnn gno gnp gnr gns gnt gob goe gog goi gon goo gop gor gos got gpb gpe gpg gpi gpn gpo gpp gpr gps gpt grb gre grg gri grn gro grp grr grs grt gsb gse gsg gsi gsn gso gsp gsr gss gst gtb gte gtg gti gtn gto gtp gtr gts gtt ibb ibe ibg ibi ibn ibo ibp ibr ibs ibt ie- iee ieg iei ien iep ier ies iet igb ige igg igi ign igo igp igr igs igt iib iie iii iin iio iip iir iis iit in- inb ine ing ini inn ino inp inr ins int io- iob ioe iog ioi ion ioo iop ior ios iot ipb ipe ipg ipi ipn ipo ipp ipr ips ipt ir- irb ire irg iri irn iro irp irr irs irt is- isb ise isg isi isn iso isp isr iss ist itb ite itg iti itn ito itp its itt n-i nbb nbe nbg nbi nbn nbo nbp nbr nbs nbt ne- neb nee neg nei nen neo nep ner nes net ngb nge ngg ngi ngn ngo ngp ngs ngt nib nie nig nii nin nio nip nir nis nit nnb nne nng nni nnn nno nnp nns nnt no- nob noe nog noi non noo nop nor nos not npb npe npg npi npn npo npp npr nps npt nrb nre nrg nri nrn nro nrp nrr nrs nrt nsb nse nsg nsi nsn nso nsp nsr nss nst ntb nte ntg nti ntn nto ntp ntr nts ntt o-i ob- obb obe obg obi obn obo obp obr obs obt oeb oee oeg oei oen oeo oep oer oes oet oge ogg ogi ogn ogo ogp ogs ogt oib oie oii oin oio oip oir ois oit on- onb one ong oni onn ono onp onr ons ont oo- oob oog ooi oon ooo oop oor oos oot op- opb ope opg opi opn opo opp opr ops opt or- orb ore org ori orn oro orp orr ors ort os- osb ose osg osi osn oso osp osr oss ost ot- otb ote otg oti otn oto otp otr ots ott p-p pbb pbe pbg pbi pbn pbo pbp pbr pbs pbt peb pee peg pei pen peo pep per pes pet pgb pge pgg pgi pgn pgo pgp pgr pgs pgt pib pie pig pii pin pio pip pir pis pit pn- pnb pne png pni pnn pno pnp pnr pns pnt pob poe pog poi pon poo pop por pos pot ppb ppe ppg ppi ppn ppo ppp ppr pps ppt prb pre prg pri prn pro prp prr prs prt ps- psb pse psg psi psn pso psp psr pss pst pt- ptb pte ptg pti ptn pto ptp ptr pts ptt rbb rbe rbg rbi rbn rbo rbp rbr rbs rbt re- reb ree reg rei ren reo rep rer res ret rgb rge rgg rgi rgn rgo rgp rgr rgs rgt rib rie rig rii rin rio rip rir ris rit rnb rng rni rnn rno rnp rnr rns rnt rob roe rog roi ron roo rop ror ros rot rpb rpe rpg rpi rpn rpo rpp rpr rps rpt rrb rrg rri rrn rrp rrr rrs rrt rsb rse rsg rsi rsn rso rsp rsr rss rst rtb rte rtg rti rtn rto rtp rtr rts rtt sbb sbe sbg sbi sbn sbo sbp sbr sbs sbt se- seb see seg sei sen seo sep ser ses set sgb sge sgg sgi sgn sgo sgp sgr sgs sgt sib sie sig sii sin sio sip sir sis sit snb sne sng sni snn sno snp snr sns snt sob soe sog soi son soo sop sor sos sot spb spe spg spi spn spo spp spr sps spt sr- srb sre srg sri srn sro srp srr srs srt ss- ssb sse ssg ssi ssn sso ssp ssr sss sst stb ste stg sti stn sto stp str sts stt tbb tbe tbg tbi tbn tbo tbp tbr tbs tbt te- teb tee teg tei ten teo tep ter tes tet tgb tge tgg tgi tgn tgo tgp tgr tgs tgt tib tie tig tii tin tio tip tir tis tit tnb tne tng tni tnn tno tnp tnr tns tnt to- tob toe tog toi ton too top tor tos tot tpb tpe tpg tpi tpn tpo tpp tpr tps tpt trb tre trg tri trn tro trp trr trs trt tsb