a-a a-i aaa aai aam aao aap aas ai- aia aii aim aio aip ais ama ami amm amo amp ams aoa aoi aom aoo aop aos ap- apa api apm apo app aps as- asa asi asm aso asp ass ia- iaa iai iam iao iap ias iia iii iim iio iip iis im- ima imi imm imo imp ims io- ioa ioi iom ioo iop ios ipa ipi ipm ipo ipp ips is- isa isi ism iso isp iss m-o maa mai mam mao map mas mi- mia mii mim mio mip mis mma mmi mmm mmo mmp mms moa moi mom moo mop mos mpa mpi mpm mpo mpp mps msa msi msm mso msp mss o-i oaa oai oam oao oap oas oia oii oim oio oip ois om- oma omi omm omo omp oms oo- ooa ooi oom ooo oop oos op- opa opi opm opo opp ops os- osa osi osm oso osp oss p-p paa pai pam pao pap pas pia pii pim pio pip pis pma pmi pmm pmo pmp pms poa poi pom poo pop pos ppa ppi ppm ppo ppp pps ps- psa psi psm pso psp pss saa sai sam sao sap sas sia sii sim sio sip sis sma smi smm smo smp sms soa soi som soo sop sos spa spi spm spo spp sps ss- ssa ssi ssm sso ssp sss