-er b-p bbb bbe bbi bbl bbp bbr bbt be- beb bee bei bel bep ber bet bi- bib bie bii bil bip bir bit blb ble bli bll blp blr blt bpb bpe bpi bpl bpp bpr bpt brb bre bri brl brp brr brt btb bte bti btl btp btr btt ebb ebe ebi ebl ebp ebr ebt eeb eee eel eep eer eet eib eie eii eil eip eir eit elb ele eli ell elp elr elt ep- epb epe epi epl epp epr ept erb ere eri erl erp err ert etb ete eti etl etp etr ett ibb ibe ibi ibl ibp ibr ibt ie- iee iei iel iep ier iet iib iie iii iil iip iir iit il- ilb ile ili ill ilp ilr ilt ipb ipe ipi ipl ipp ipr ipt ir- irb ire iri irl irp irr irt itb ite iti itl itp itt l-p lbb lbe lbi lbl lbp lbr lbt leb lee lei lel lep ler let lib lie lii lil lip lir lit llb lle lli lll llp llr llt lpb lpe lpi lpl lpp lpr lpt lrb lri lrp lrr lrt ltb lte lti ltl ltp ltr ltt p-p pbb pbe pbi pbl pbp pbr pbt peb pee pei pel pep per pet pib pie pii pil pip pir pit plb ple pli pll plp plr plt ppb ppe ppi ppl ppp ppr ppt prb pre pri prl prp prr prt pt- ptb pte pti ptl ptp ptr ptt rbb rbe rbi rbl rbp rbr rbt re- reb ree rei rel rep rer ret rib rie rii ril rip rir rit rle rli rll rlp rlr rlt rpb rpe rpi rpl rpp rpr rpt rrb rri rrl rrp rrr rrt rtb rte rti rtl rtp rtr rtt tbb tbe tbi tbl tbp tbr tbt te- teb tee tei tel tep ter tet tib tie tii til tip tir tit tle tli tll tlp tlr tlt tpb tpe tpi tpl tpp tpr tpt trb tre tri trl trp trr trt ttb tte tti ttl ttp ttr ttt