C21221212121323223313131323132322331323223313331312121133131231131   >>    C2122121212132322331313132313232233132322331333131212113313123113   <<    C21221212121323223313131323132322331323223313331312121133131231133   >>      C21221212121323223313131323132322331323223313331312121133131231132   >>