iii iim iio iip iis iit im- imi imm imo imp ims imt io- ioi iom ioo iop ios iot ipi ipm ipo ipp ips ipt is- isi ism iso isp iss ist iti itm ito itp its itt m-o mi- mii mim mio mip mis mit mmi mmm mmo mmp mms mmt moi mom moo mop mos mot mpi mpm mpo mpp mps mpt msi msm mso msp mss mst mti mtm mto mtp mts mtt o-i oii oim oio oip ois oit om- omi omm omo omp oms omt oo- ooi oom ooo oop oos oot op- opi opm opo opp ops opt os- osi osm oso osp oss ost ot- oti otm oto otp ots ott p-p pii pim pio pip pis pit pmi pmm pmo pmp pms pmt poi pom poo pop pos pot ppi ppm ppo ppp pps ppt ps- psi psm pso psp pss pst pt- pti ptm pto ptp pts ptt sii sim sio sip sis sit smi smm smo smp sms smt soi som soo sop sos sot spi spm spo spp sps spt ss- ssi ssm sso ssp sss sst sti stm sto stp sts stt tii tim tio tip tis tit tmi tmm tmo tmp tms tmt to- toi tom too top tos tot tpi tpm tpo tpp tps tpt tsi tsm tso tsp tss tst tti ttm tto ttp tts ttt