iii iim iin iio iip iir iix im- imi imm imn imo imp imx in- ini inm inn ino inp inr inx io- ioi iom ion ioo iop ior ipi ipm ipn ipo ipp ipr ipx ir- iri irm irn iro irp irr irx ixi ixn m-o m-r mi- mii mim min mio mip mir mix mmi mmm mmn mmo mmp mmr mmx mni mnm mnn mno mnp mnr moi mom mon moo mop mor mox mpi mpm mpn mpo mpp mpr mpx mri mrm mrn mro mrp mrr mrx mxi mxn mxp mxr n-i nii nim nin nio nip nir nix nmi nmm nmn nmo nmp nmr nni nnm nnn nno nnp no- noi nom non noo nop nor nox npi npm npn npo npp npr nri nrm nrn nro nrp nrr nrx o-i oii oim oin oio oip oir om- omi omm omn omo omp omr omx on- oni onn ono onp onr onx oo- ooi oom oon ooo oop oor oox op- opi opm opn opo opp opr opx or- ori orm orn oro orp orr orx ox- oxi oxn oxo oxx p-p pii pim pin pio pip pir pix pmi pmm pmn pmo pmp pmr pmx pn- pni pnm pnn pno pnp pnr pnx poi pom pon poo pop por pox ppi ppm ppn ppo ppp ppr ppx pri prm prn pro prp prr prx pxm pxr rii rim rin rio rip rir rix rmi rmm rmn rmo rmp rmr rmx rni rnm rnn rno rnp rnr roi rom ron roo rop ror rox rpi rpm rpn rpo rpp rpr rpx rri rrm rrn rrp rrr rxp rxr xii xin xio xix xmi xmm xmo xmp xmr xmx xno xoi xom xon xoo xop xor xox xpm xpn xpo xpp xrx xxi xxo xxp xxx