C11111333133313232233133313331333133313332313331211113313231233131   >>    C1111133313331323223313331333133313331333231333121111331323123313   <<    C11111333133313232233133313331333133313332313331211113313231233133   >>      C11111333133313232233133313331333133313332313331211113313231233132   >>