c-- c-j ccc ccf ccj cck ccs ccu cfc cff cfk cfs cfu cjc cjf cjk cjs ckc cks csc csf csj csk css csu cuc cuf cuk cus cuu fcc fcf fcj fck fcs fcu ffc fff ffk ffs ffu fjc fjs fkc fkf fkj fkk fsc fsf fsj fsk fss fsu fuf fuk fus fuu jcc jcf jck jcs jcu jfc jff jfj jfk jfs jjc jjf jjj jjk jjs jju jkk jks jku jsc jsf jsj jsk jss jsu juf juk jus kcc kck kcs kcu kfc kff kfs kfu kjc kjs kju kkc kkk kks kku ksc ksf ksk kss ksu kuc kuj kuk kus kuu scc scf scj sck scs scu sfc sff sfj sfk sfs sfu sjc sjf sjj sjk sjs sju sk- skc skf skj skk sks sku ss- ssc ssf ssj ssk sss ssu suc suf suk sus suu ucc ucf ucj uck ucs ucu ufc uff ufj ufs ufu ujc ujs ukc ukf ukk uku usc usf usj usk uss usu uuc uus uuu