olb olc olf olk oll olm olo olp om- oma omb omc omf omh oml omm omo omp omr oo- ooa oob ooc oof ooh ook ool oom ooo oop oor op- opa opb opc opf oph opk opl opm opo opp opr or- ora orb orc orf orh ork orl orm oro orp orr p-p paa pab pac paf pah pak pal pam pao pap par pba pbb pbc pbf pbk pbl pbm pbo pbp pbr pca pcb pcc pcf pch pck pcl pcm pco pcp pcr pfa pfb pfc pff pfk pfl pfm pfo pfp pfr pha phb phc phf phk phl phm pho php phr pka pkb pkc pkf pkl pkm pko pkp pkr pla plb plc plf plh plk pll plm plo plp plr pma pmb pmc pmf pmh pmk pml pmm pmo pmp pmr poa pob poc pof poh pok pol pom poo pop por ppa ppb ppc ppf pph ppk ppl ppm ppo ppp ppr pra prb prc prf prh prk prl prm pro prp prr ra- raa rab rac raf rah rak ral ram rao rap rar rba rbb rbc rbf rbh rbk rbl rbm rbo rbp rbr rca rcb rcc rcf rch rcl rcm rco rcp rcr rfa rfb rfc rff rfh rfk rfl rfm rfo rfp rfr rh- rha rhb rhc rhf rhh rhl rhm rho rhp rhr rkb rkc rkf rkk rkm rko rkp rla rlc rlf rlh rll rlm rlo rlp rlr rma rmb rmc rmf rmh rml rmm rmo rmp rmr roa rob roc rof roh rok rol rom roo rop ror rpa rpb rpc rpf rph rpk rpl rpm rpo rpp rpr rra rrb rrc rrf rrh rrk rrl rrm rrp rrr