c-- ccc ccf ccl ccs ccu cfc cff cfl cfs cfu cl- clc clf cll cls clu csc csf csl css csu cuc cuf cul cus cuu fcc fcf fcl fcs fcu ffc fff ffl ffs ffu flc flf fll fls flu fsc fsf fsl fss fsu fuf ful fus fuu lcc lcf lcl lcs lcu lfc lff lfl lfs lfu llc llf lll lls llu lsc lsf lsl lss lsu luc luf lul lus luu scc scf scl scs scu sfc sff sfl sfs sfu slc slf sll sls slu ss- ssc ssf ssl sss ssu suc suf sul sus suu ucc ucf ucl ucs ucu ufc uff ufl ufs ufu ulc ulf ull uls ulu usc usf usl uss usu uuc uus uuu