c-- ccc cce ccm ccn ccs ccu ce- cec cee cem cen ces ceu cmc cme cmm cmn cms cmu cn- cnc cne cnm cnn cns cnu csc cse csm csn css csu cuc cue cum cun cus cuu ec- ecc ece ecm ecn ecs ecu eec eee eem een ees em- emc eme emm emn ems emu en- enc ene enm enn ens enu es- esc ese esm esn ess esu eu- euc eue eun eus mc- mcc mce mcm mcn mcs mcu mec mee mem men mes meu mmc mme mmm mmn mms mmu mnc mne mnm mnn mns mnu msc mse msm msn mss msu muc mue mum mun mus muu ncc nce ncm ncn ncs ncu ne- nec nee nem nen nes neu nmc nme nmm nmn nms nmu nnc nne nnm nnn nns nnu nsc nse nsm nsn nss nsu nuc nue num nun nus nuu scc sce scm scn scs scu se- sec see sem sen ses seu smc sme smm smn sms smu snc sne snm snn sns snu ss- ssc sse ssm ssn sss ssu suc sue sum sun sus suu ucc uce ucm ucn ucs ucu uec uee uem uen ues um- umc ume umm umn ums umu un- unc une unm unn uns unu usc use usm usn uss usu uuc uue uum uun uus uuu