-ji fff ffi ffm ffx fif fii fij fim fix fji fjm fmf fmi fmj fmm fmx fxi fxm fxx i-f iff ifi ifm ifx iif iii iij iim iix ijf iji ijm im- imf imi imm imx ixi j-i jff jfi jfj jfm jfx jif jii jij jim jjf jjj jmf jmi jmj jmm jmx m-f mff mfi mfj mfm mi- mif mii mij mim mix mjj mjm mmf mmi mmj mmm mmx mxi xfm xfx xii xix xmf xmi xmm xmx xxi xxx