nrn nro nrp nrr o-i oaa oac oad oae oai oal oam oan oao oap oar oc- oca occ ocd oci ocl ocm ocn oco ocp ocr oda odc odd ode odi odl odm odn odo odp odr oea oec oed oee oei oel oem oen oeo oep oer oia oic oid oie oii oil oim oin oio oip oir ola olc old ole oli oll olm oln olo olp om- oma omc omd ome omi oml omm omn omo omp omr on- ona onc ond one oni onl onn ono onp onr oo- ooa ooc ood ooi ool oom oon ooo oop oor op- opa opc opd ope opi opl opm opn opo opp opr or- ora orc ord ore ori orl orm orn oro orp orr p-p paa pac pad pae pai pal pam pan pao pap par pca pcc pcd pce pci pcl pcm pcn pco pcp pcr pda pdc pdd pde pdi pdl pdm pdn pdo pdp pdr pea pec ped pee pei pel pem pen peo pep per pia pic pid pie pii pil pim pin pio pip pir pla plc pld ple pli pll plm pln plo plp plr pma pmc pmd pme pmi pml pmm pmn pmo pmp pmr pn- pna pnc pnd pne pni pnl pnm pnn pno pnp pnr poa poc pod poe poi pol pom pon poo pop por ppa ppc ppd ppe ppi ppl ppm ppn ppo ppp ppr pra prc prd pre pri prl prm prn pro prp prr ra- raa rac rad rae rai ral ram ran rao rap rar rca rcc rcd rce rci rcl rcm rcn rco rcp rcr rda rdc rdd rde rdi rdl rdm rdn rdo rdp rdr re- rea rec red ree rei rel rem ren reo rep rer ria ric rid rie rii ril rim rin rio rip rir rla rlc rld rle rli rll rlm rln rlo rlp rlr rma rmc rmd rme rmi rml rmm rmn rmo rmp rmr rna rnc rnd rni rnm rnn rno rnp rnr roa roc rod roe roi rol rom ron roo rop ror rpa rpc rpd rpe rpi rpl rpm rpn rpo rpp rpr rra rrc rrd rri rrl rrm rrn rrp rrr