C11111211113313112113313331333132313331322121111133313331323123313331333223311   >>    C1111121111331311211331333133313231333132212111113331333132312331333133322331   <<    C11111211113313112113313331333132313331322121111133313331323123313331333223313   >>      C11111211113313112113313331333132313331322121111133313331323123313331333223312   >>