-ol fff ffl ffo ffp ffs flf fll flo flp fls fof fol foo fop fos fpl fpo fpp fps fsf fsl fso fsp fss l-p lff lfl lfo lfp lfs llf lll llo llp lls lof lol loo lop los lpf lpl lpo lpp lps lsf lsl lso lsp lss of- off ofl ofo ofp ofs olf oll olo olp ols oo- oof ool ooo oop oos op- opf opl opo opp ops os- osf osl oso osp oss p-p pff pfl pfo pfp pfs plf pll plo plp pls pof pol poo pop pos ppf ppl ppo ppp pps ps- psf psl pso psp pss sff sfl sfo sfp sfs slf sll slo slp sls sof sol soo sop sos spf spl spo spp sps ss- ssf ssl sso ssp sss