C1111133313331323223313331333133313331333231333112113313133323231   >>    C111113331333132322331333133313331333133323133311211331313332323   <<    C1111133313331323223313331333133313331333231333112113313133323233   >>      C1111133313331323223313331333133313331333231333112113313133323232   >>