c-- ccc cck ccn cco ccs ccu ckc cko cks cn- cnc cnn cno cns cnu co- coc cok con coo cos cou csc csk csn cso css csu cuc cuk cun cuo cus cuu kcc kck kcn kcs kcu kkc kkk kkn kks kku kn- knc knk knn kno knu koc kok kon koo kos kou ksc ksk ksn kso kss ksu kuc kuk kun kus kuu ncc nck ncn nco ncs ncu nkc nkk nkn nko nks nku nnc nnk nnn nno nns nnu no- noc nok non noo nos nou nsc nsk nsn nso nss nsu nuc nuk nun nuo nus nuu oc- occ ock ocn oco ocs ocu okc okk oko oks oku on- onc onk onn ono ons onu oo- ooc ook oon ooo oos os- osc osk osn oso oss osu ou- ouc ouk oun ouo ous scc sck scn sco scs scu sk- skc skk sko sks sku snc snk snn sno sns snu soc sok son soo sos sou ss- ssc ssk ssn sso sss ssu suc suk sun suo sus suu ucc uck ucn uco ucs ucu ukc ukk ukn uku un- unc unk unn uno uns unu uoc uok uon uoo uos usc usk usn uso uss usu uuc uun uus uuu