nnn nno nnp nns no- noa nob noe noh noi noj nok non noo nop nor nos npa npb npe nph npi npn npo npp npr nps nra nrb nre nri nrj nrk nrn nro nrp nrr nrs nsa nsb nse nsh nsi nsk nsn nso nsp nsr nss o-i oaa oab oae oah oai oaj oak oan oao oap oar oas ob- oba obb obe obh obi obj obk obn obo obp obr obs oea oeb oee oeh oei oen oeo oep oer oes oha ohe ohh ohi ohn oho ohp ohr ohs oia oib oie oii oik oin oio oip oir ois oja ojb oje oji ojo ojs oka okb oke oki okj okk oko okp okr oks on- ona onb one onh oni onj onk onn ono onp onr ons oo- ooa oob ooh ooi ook oon ooo oop oor oos op- opa opb ope oph opi opj opk opn opo opp opr ops or- ora orb ore orh ori ork orn oro orp orr ors os- osa osb ose osh osi osj osk osn oso osp osr oss p-p paa pab pae pah pai paj pak pan pao pap par pas pba pbb pbe pbi pbj pbk pbn pbo pbp pbr pbs pea peb pee peh pei pek pen peo pep per pes pha phb phe phi phk phn pho php phr phs pia pib pie pih pii pij pik pin pio pip pir pis pja pji pjo pjp pjs pka pkb pke pki pkn pko pkp pkr pks pn- pna pnb pne pnh pni pnk pnn pno pnp pnr pns poa pob poe poh poi pok pon poo pop por pos ppa ppb ppe pph ppi ppj ppk ppn ppo ppp ppr pps pra prb pre prh pri prk prn pro prp prr prs ps- psa psb pse psh psi psj psk psn pso psp psr pss ra- raa rab rae rah rai raj rak ran rao rap rar ras rba rbb rbe rbh rbi rbk rbn rbo rbp rbr rbs re- rea reb ree reh rei rek ren reo rep rer res rh- rha rhb rhe rhh rhi rhn rho rhp rhr rhs ria rib rie rih rii rik rin rio rip rir ris rja rjk rjp rjr rkb rke rkk rko rkp rks rna rnb rnh rni rnn rno rnp rnr rns roa rob roe roh roi roj rok ron roo rop ror ros rpa rpb rpe rph rpi rpk rpn rpo rpp rpr rps rra rrb rrh rri rrk rrn rrp rrr rrs rsa rsb rse rsh rsi rsj rsk rsn rso rsp rsr rss saa sab sae sah sai saj sak san sao sap sar sas sba sbb sbe sbh sbi sbj sbk sbn sbo sbp sbr sbs se- sea seb see seh sei sej sek sen seo sep ser ses sh- sha shb she shh shi shk shn sho shp shr shs sia sib sie sih sii sij sik sin sio sip sir sis sja sjb sje sjh sji sjj sjk sjp sjr sjs sk- ska skb ske skh ski skj skk sko skp skr sks sna snb sne sni snj snk snn sno snp snr sns soa sob soe soh soi soj sok son soo sop sor sos spa spb spe sph spi spk spn spo spp spr sps sr- sra srb sre srh sri srj srk srn sro srp srr srs ss- ssa ssb sse ssh ssi ssj ssk ssn sso ssp ssr sss