-er b-p bbb bbe bbi bbn bbo bbp bbr bbt be- beb bee bei ben beo bep ber bet bi- bib bie bii bin bio bip bir bit bnb bne bni bnn bno bnp bnr bnt bob boe boi bon boo bop bor bot bpb bpe bpi bpn bpo bpp bpr bpt brb bre bri brn bro brp brr brt btb bte bti btn bto btp btr btt ebb ebe ebi ebn ebo ebp ebr ebt eeb eee een eeo eep eer eet eib eie eii ein eio eip eir eit en- enb ene eni enn eno enp enr ent eo- eob eoe eoi eon eoo eop eor eot ep- epb epe epi epn epo epp epr ept erb ere eri ern ero erp err ert etb ete eti etn eto etp etr ett ibb ibe ibi ibn ibo ibp ibr ibt ie- iee iei ien iep ier iet iib iie iii iin iio iip iir iit in- inb ine ini inn ino inp inr int io- iob ioe ioi ion ioo iop ior iot ipb ipe ipi ipn ipo ipp ipr ipt ir- irb ire iri irn iro irp irr irt itb ite iti itn ito itp itt n-i nbb nbe nbi nbn nbo nbp nbr nbt ne- neb nee nei nen neo nep ner net nib nie nii nin nio nip nir nit nnb nne nni nnn nno nnp nnt no- nob noe noi non noo nop nor not npb npe npi npn npo npp npr npt nrb nre nri nrn nro nrp nrr nrt ntb nte nti ntn nto ntp ntr ntt o-i ob- obb obe obi obn obo obp obr obt oeb oee oei oen oeo oep oer oet oib oie oii oin oio oip oir oit on- onb one oni onn ono onp onr ont oo- oob ooi oon ooo oop oor oot op- opb ope opi opn opo opp opr opt or- orb ore ori orn oro orp orr ort ot- otb ote oti otn oto otp otr ott p-p pbb pbe pbi pbn pbo pbp pbr pbt peb pee pei pen peo pep per pet pib pie pii pin pio pip pir pit pn- pnb pne pni pnn pno pnp pnr pnt pob poe poi pon poo pop por pot ppb ppe ppi ppn ppo ppp ppr ppt prb pre pri prn pro prp prr prt pt- ptb pte pti ptn pto ptp ptr ptt rbb rbe rbi rbn rbo rbp rbr rbt re- reb ree rei ren reo rep rer ret rib rie rii rin rio rip rir rit rnb rni rnn rno rnp rnr rnt rob roe roi ron roo rop ror rot rpb rpe rpi rpn rpo rpp rpr rpt rrb rri rrn rrp rrr rrt rtb rte rti rtn rto rtp rtr rtt tbb tbe tbi tbn tbo tbp tbr tbt te- teb tee tei ten teo tep ter tet tib tie tii tin tio tip tir tit tnb tne tni tnn tno tnp tnr tnt to- tob toe toi ton too top tor tot tpb tpe tpi tpn tpo tpp tpr tpt trb tre tri trn tro trp trr trt ttb tte tti ttn tto ttp ttr ttt