-er b-p bbb bbe bbf bbi bbo bbp bbr bbt be- beb bee bef bei beo bep ber bet bfb bfe bff bfi bfo bfp bfr bft bi- bib bie bif bii bio bip bir bit bob boe bof boi boo bop bor bot bpb bpe bpf bpi bpo bpp bpr bpt brb bre brf bri bro brp brr brt btb bte btf bti bto btp btr btt ebb ebe ebf ebi ebo ebp ebr ebt eeb eee eef eeo eep eer eet ef- efb efe eff efi efo efp efr eft eib eie eif eii eio eip eir eit eo- eob eoe eof eoi eoo eop eor eot ep- epb epe epf epi epo epp epr ept erb ere erf eri ero erp err ert etb ete etf eti eto etp etr ett fbb fbe fbf fbi fbo fbp fbr fbt feb fee fef fei feo fep fer fet ffe fff ffi ffo ffp ffr fft fib fie fif fii fip fir fit fob foe fof foi foo fop for fot fpb fpe fpi fpo fpp fpr fpt frb fre frf fri fro frp frr frt ftb fte ftf fti fto ftp ftr ftt i-f ibb ibe ibf ibi ibo ibp ibr ibt ie- iee ief iei iep ier iet ifb ife iff ifi ifo ifp ifr ift iib iie iif iii iio iip iir iit io- iob ioe iof ioi ioo iop ior iot ipb ipe ipf ipi ipo ipp ipr ipt ir- irb ire irf iri iro irp irr irt itb ite itf iti ito itp itt o-i ob- obb obe obf obi obo obp obr obt oeb oee oef oei oeo oep oer oet of- ofb ofe off ofi ofo ofp ofr oft oib oie oif oii oio oip oir oit oo- oob oof ooi ooo oop oor oot op- opb ope opf opi opo opp opr opt or- orb ore orf ori oro orp orr ort ot- otb ote otf oti oto otp otr ott p-p pbb pbe pbf pbi pbo pbp pbr pbt peb pee pef pei peo pep per pet pfb pfe pff pfi pfo pfp pfr pft pib pie pif pii pio pip pir pit pob poe pof poi poo pop por pot ppb ppe ppf ppi ppo ppp ppr ppt prb pre prf pri pro prp prr prt pt- ptb pte ptf pti pto ptp ptr ptt rbb rbe rbf rbi rbo rbp rbr rbt re- reb ree ref rei reo rep rer ret rfb rfe rff rfi rfo rfp rfr rft rib rie rif rii rio rip rir rit rob roe rof roi roo rop ror rot rpb rpe rpf rpi rpo rpp rpr rpt rrb rrf rri rrp rrr rrt rtb rte rtf rti rto rtp rtr rtt tbb tbe tbf tbi tbo tbp tbr tbt te- teb tee tef tei teo tep ter tet tfb tfe tff tfi tfo tfp tfr tft tib tie tif tii tio tip tir tit to- tob toe tof toi too top tor tot tpb tpe tpf tpi tpo tpp tpr tpt trb tre trf tri tro trp trr trt ttb tte ttf tti tto ttp ttr ttt