c-- ccc ccd ccl ccn ccu cdc cdd cdl cdn cdu cl- clc cld cll cln clu cn- cnc cnd cnl cnn cnu cuc cud cul cun cuu dcc dcd dcl dcn dcu ddc ddd ddl ddn ddu dl- dlc dld dll dlu dnc dnd dnl dnn duc dud dul dun lcc lcd lcl lcn lcu ldc ldd ldl ldn ldu llc lld lll lln llu lnc lnd lnl lnn lnu luc lud lul lun luu ncc ncd ncl ncn ncu ndc ndd ndl ndn ndu nlc nld nll nln nlu nnc nnl nnn nnu nuc nud nul nun nuu ucc ucd ucl ucn ucu udc udd udl udn udu ulc uld ull uln ulu un- unc und unl unn unu uuc uun uuu