C21221212121211331313233313131323223313232113313131133132323131   >>    C2122121212121133131323331313132322331323211331313113313232313   <<    C21221212121211331313233313131323223313232113313131133132323133   >>      C21221212121211331313233313131323223313232113313131133132323132   >>