C12313211232233312111111312111133133313331323133323132323322131131323231   >>    C1231321123223331211111131211113313331333132313332313232332213113132323   <<    C12313211232233312111111312111133133313331323133323132323322131131323233   >>      C12313211232233312111111312111133133313331323133323132323322131131323232   >>