fff ffi ffl ffp ffr fif fii fil fip fir flf fli fll flp flr fpi fpl fpp fpr frf fri frl frp frr i-f iff ifi ifl ifp ifr iif iii iil iip iir il- ilf ili ill ilp ilr ipf ipi ipl ipp ipr ir- irf iri irl irp irr l-p lff lfi lfl lfp lfr lif lii lil lip lir llf lli lll llp llr lpf lpi lpl lpp lpr lrf lri lrp lrr p-p pff pfi pfl pfp pfr pif pii pil pip pir plf pli pll plp plr ppf ppi ppl ppp ppr prf pri prl prp prr rff rfi rfl rfp rfr rif rii ril rip rir rlf rli rll rlp rlr rpf rpi rpl rpp rpr rrf rri rrl rrp rrr