C12313211232233312111111312111133133313331333113113332322331311   >>    C1231321123223331211111131211113313331333133311311333232233131   <<    C12313211232233312111111312111133133313331333113113332322331313   >>      C12313211232233312111111312111133133313331333113113332322331312   >>