C3132121111133313233121111331333133313331333133313331333133313232312321   >>    C313212111113331323312111133133313331333133313331333133313331323231232   <<    C3132121111133313233121111331333133313331333133313331333133313232312323   >>      C3132121111133313233121111331333133313331333133313331333133313232312322   >>