C13112133313331323321333133313331333133313331313331322331311112113313111231   >>    C1311213331333132332133313331333133313331333131333132233131111211331311123   <<    C13112133313331323321333133313331333133313331313331322331311112113313111233   >>      C13112133313331323321333133313331333133313331313331322331311112113313111232   >>