-er b-p bbb bbd bbe bbi bbn bbo bbp bbr bdb bdd bde bdi bdo bdp bdr be- beb bed bee bei ben beo bep ber bi- bib bid bie bii bin bio bip bir bnb bnd bne bni bnn bno bnp bnr bob bod boe boi bon boo bop bor bpb bpd bpe bpi bpn bpo bpp bpr brb brd bre bri brn bro brp brr dbb dbd dbe dbi dbn dbo dbp dbr ddb ddd dde ddi ddn ddo ddp ddr de- deb ded dee dei den deo dep der di- dib did die dii din dio dip dir dnb dnd dne dni dnn dno dnp dnr dob dod doe doi don doo dop dor dpb dpd dpe dpi dpn dpo dpp dpr drb drd dre dri drn dro drp drr ebb ebd ebe ebi ebn ebo ebp ebr ed- edb edd ede edi edn edo edp edr eeb eed eee een eeo eep eer eib eid eie eii ein eio eip eir en- enb end ene eni enn eno enp enr eo- eob eod eoe eoi eon eoo eop eor ep- epb epd epe epi epn epo epp epr erb erd ere eri ern ero erp err i-d ibb ibd ibe ibi ibn ibo ibp ibr idb idd ide idi idn ido idp idr ie- ied iee iei ien iep ier iib iid iie iii iin iio iip iir in- inb ind ine ini inn ino inp inr io- iob iod ioe ioi ion ioo iop ior ipb ipd ipe ipi ipn ipo ipp ipr ir- irb ird ire iri irn iro irp irr n-i nbb nbd nbe nbi nbn nbo nbp nbr ndb ndd nde ndi ndn ndo ndp ndr ne- neb ned nee nei nen neo nep ner nib nid nie nii nin nio nip nir nnb nne nni nnn nno nnp no- nob nod noe noi non noo nop nor npb npd npe npi npn npo npp npr nrb nrd nre nri nrn nro nrp nrr o-i ob- obb obd obe obi obn obo obp obr odb odd ode odi odn odo odp odr oeb oed oee oei oen oeo oep oer oib oid oie oii oin oio oip oir on- onb ond one oni onn ono onp onr oo- oob ood ooi oon ooo oop oor op- opb opd ope opi opn opo opp opr or- orb ord ore ori orn oro orp orr p-p pbb pbd pbe pbi pbn pbo pbp pbr pdb pdd pde pdi pdn pdo pdp pdr peb ped pee pei pen peo pep per pib pid pie pii pin pio pip pir pn- pnb pnd pne pni pnn pno pnp pnr pob pod poe poi pon poo pop por ppb ppd ppe ppi ppn ppo ppp ppr prb prd pre pri prn pro prp prr rbb rbd rbe rbi rbn rbo rbp rbr rdb rdd rde rdi rdn rdo rdp rdr re- reb red ree rei ren reo rep rer rib rid rie rii rin rio rip rir rnb rnd rni rnn rno rnp rnr rob rod roe roi ron roo rop ror rpb rpd rpe rpi rpn rpo rpp rpr rrb rrd rri rrn rrp rrr