C13131221323331323131323132323213231323131323223313233313233313231123313132321   >>    C1313122132333132313132313232321323132313132322331323331323331323112331313232   <<    C13131221323331323131323132323213231323131323223313233313233313231123313132323   >>      C13131221323331323131323132323213231323131323223313233313233313231123313132322   >>