-er b-p bbb bbd bbe bbi bbl bbp bbr bdb bdd bde bdi bdl bdp bdr be- beb bed bee bei bel bep ber bi- bib bid bie bii bil bip bir blb bld ble bli bll blp blr bpb bpd bpe bpi bpl bpp bpr brb brd bre bri brl brp brr dbb dbd dbe dbi dbl dbp dbr ddb ddd dde ddi ddl ddp ddr de- deb ded dee dei del dep der di- dib did die dii dil dip dir dl- dlb dld dle dli dll dlp dlr dpb dpd dpe dpi dpl dpp dpr drb drd dre dri drl drp drr ebb ebd ebe ebi ebl ebp ebr ed- edb edd ede edi edl edp edr eeb eed eee eel eep eer eib eid eie eii eil eip eir elb eld ele eli ell elp elr ep- epb epd epe epi epl epp epr erb erd ere eri erl erp err i-d ibb ibd ibe ibi ibl ibp ibr idb idd ide idi idl idp idr ie- ied iee iei iel iep ier iib iid iie iii iil iip iir il- ilb ild ile ili ill ilp ilr ipb ipd ipe ipi ipl ipp ipr ir- irb ird ire iri irl irp irr l-p lbb lbd lbe lbi lbl lbp lbr ldb ldd lde ldi ldl ldp ldr leb led lee lei lel lep ler lib lid lie lii lil lip lir llb lld lle lli lll llp llr lpb lpd lpe lpi lpl lpp lpr lrb lrd lri lrp lrr p-p pbb pbd pbe pbi pbl pbp pbr pdb pdd pde pdi pdl pdp pdr peb ped pee pei pel pep per pib pid pie pii pil pip pir plb pld ple pli pll plp plr ppb ppd ppe ppi ppl ppp ppr prb prd pre pri prl prp prr rbb rbd rbe rbi rbl rbp rbr rdb rdd rde rdi rdl rdp rdr re- reb red ree rei rel rep rer rib rid rie rii ril rip rir rld rle rli rll rlp rlr rpb rpd rpe rpi rpl rpp rpr rrb rrd rri rrl rrp rrr