b-p bbb bbi bbm bbo bbp bbx bi- bib bii bim bio bip bix bmb bmi bmm bmo bmp bmx bob boi bom boo bop box bpb bpi bpm bpo bpp bpx bxb bxi bxm bxo bxx ibb ibi ibm ibo ibp ibx iib iii iim iio iip iix im- imb imi imm imo imp imx io- iob ioi iom ioo iop ipb ipi ipm ipo ipp ipx ixi m-o mbb mbi mbm mbo mbp mbx mi- mib mii mim mio mip mix mmb mmi mmm mmo mmp mmx mob moi mom moo mop mox mpb mpi mpm mpo mpp mpx mxi mxp o-i ob- obb obi obm obo obp obx oib oii oim oio oip om- omb omi omm omo omp omx oo- oob ooi oom ooo oop oox op- opb opi opm opo opp opx ox- oxb oxi oxo oxx p-p pbb pbi pbm pbo pbp pbx pib pii pim pio pip pix pmb pmi pmm pmo pmp pmx pob poi pom poo pop pox ppb ppi ppm ppo ppp ppx pxm xbx xii xio xix xmi xmm xmo xmp xmx xoi xom xoo xop xox xpb xpm xpo xpp xxi xxo xxp xxx