C3132121111133313233121111331333133313331322331333133313221313232321   >>    C313212111113331323312111133133313331333132233133313331322131323232   <<    C3132121111133313233121111331333133313331322331333133313221313232323   >>      C3132121111133313233121111331333133313331322331333133313221313232322   >>