C1111133313331323223313331333133313331333111312111133132313231312313111   >>    C111113331333132322331333133313331333133311131211113313231323131231311   <<    C1111133313331323223313331333133313331333111312111133132313231312313113   >>      C1111133313331323223313331333133313331333111312111133132313231312313112   >>