C21221212121211331313233313131133132312111133131322331323231111   >>    C2122121212121133131323331313113313231211113313132233132323111   <<    C21221212121211331313233313131133132312111133131322331323231113   >>      C21221212121211331313233313131133132312111133131322331323231112   >>