C11111333133313232233133313331333131123313221211113313113313231333133322321   >>    C1111133313331323223313331333133313112331322121111331311331323133313332232   <<    C11111333133313232233133313331333131123313221211113313113313231333133322323   >>      C11111333133313232233133313331333131123313221211113313113313231333133322322   >>