ddd ddf ddi ddk ddo ddp ddr dfd dff dfi dfk dfo dfp dfr di- did dif dii dik dio dip dir dki dkk dko dkp dkr dod dof doi dok doo dop dor dpd dpf dpi dpk dpo dpp dpr drd dri drk dro drp drr fdd fdf fdi fdk fdo fdp fdr ffd fff ffi ffk ffo ffp ffr fid fif fii fik fip fir fkf fki fkk fkp fof foi fok foo fop for fpd fpi fpk fpo fpp fpr frd frf fri frk fro frp frr i-d i-f idd idf idi idk ido idp idr ifd iff ifi ifo ifp ifr iid iif iii iio iip iir ikf iki ikk iko ikr io- iod iof ioi ioo iop ior ipd ipf ipi ipo ipp ipr ir- ird irf iri irk iro irp irr kdf kdk kdo kdp kdr kfd kff kfi kfo kid kif kii kik kio kip kir kki kkk kkp kkr kod kof koi kok koo kop kor kpd kpf kpi kpk kpo kpp kpr krd krf kri krk kro krp krr o-i odd odf odi odo odp odr of- ofd off ofi ofo ofp ofr oid oif oii oik oio oip oir okd oki okk oko okp okr oo- ood oof ooi ook ooo oop oor op- opd opf opi opk opo opp opr or- ord orf ori ork oro orp orr p-p pdd pdf pdi pdk pdo pdp pdr pfd pff pfi pfk pfo pfp pfr pid pif pii pik pio pip pir pkd pkf pki pko pkp pkr pod pof poi pok poo pop por ppd ppf ppi ppk ppo ppp ppr prd prf pri prk pro prp prr rdd rdf rdi rdo rdp rdr rfd rff rfi rfk rfo rfp rfr rid rif rii rik rio rip rir rkf rkk rko rkp rod rof roi rok roo rop ror rpd rpf rpi rpk rpo rpp rpr rrd rrf rri rrk rrp rrr