a-a aaa aam aan aao aar ama amm amn amo amr an- ana anm ann ano anr aoa aom aon aoo aor ar- ara arm arn aro arr m-o m-r maa mam man mao mar mma mmm mmn mmo mmr mna mnm mnn mno mnr moa mom mon moo mor mra mrm mrn mro mrr naa nam nan nao nar nma nmm nmn nmo nmr nna nnm nnn nno no- noa nom non noo nor nra nrm nrn nro nrr oaa oam oan oao oar om- oma omm omn omo omr on- ona onn ono onr oo- ooa oom oon ooo oor or- ora orm orn oro orr ra- raa ram ran rao rar rma rmm rmn rmo rmr rna rnm rnn rno rnr roa rom ron roo ror rra rrm rrn rrr