omb omg omi oml omm omn omo omp omu on- ona onb ong oni onk onl onn ono onp onu oo- ooa oob oog ooi ook ool oom oon ooo oop op- opa opb opg opi opk opl opm opn opo opp ou- oua oui ouk oul oum oun ouo oup p-p paa pab pag pai pak pal pam pan pao pap pau pba pbb pbg pbi pbk pbl pbm pbn pbo pbp pbu pga pgb pgg pgi pgk pgl pgm pgn pgo pgp pia pib pig pii pik pil pim pin pio pip piu pka pkb pkg pki pkl pkm pkn pko pkp pku pla plb plg pli plk pll plm pln plo plp plu pma pmb pmg pmi pmk pml pmm pmn pmo pmp pmu pn- pna pnb png pni pnk pnl pnm pnn pno pnp pnu poa pob pog poi pok pol pom pon poo pop pou ppa ppb ppg ppi ppk ppl ppm ppn ppo ppp ppu pua pub pug pui puk pul pum pun pup puu ua- uaa uab uag uai uak ual uam uan uao uap uau uba ubb ubg ubi ubk ubl ubn ubo ubp ubu uga ugb ugg ugi ugk ugl ugm ugn ugo ugp ugu uia uib uig uii uil uim uin uio uip uiu uka ukb uki ukk ukl ukn ukp uku ula ulb ulg uli ulk ull ulm uln ulo ulp ulu um- uma umb umg umi uml umm umn umo ump umu un- una unb ung uni unk unl unm unn uno unp unu uoa uob uog uok uol uom uon uoo uop up- upa upb upg upi upk upm upn upo upp upu uua uug uum uun uuu