C3132121111133313233121111331333133313331333133313331333132313231333133312221   >>    C313212111113331323312111133133313331333133313331333133313231323133313331222   <<    C3132121111133313233121111331333133313331333133313331333132313231333133312223   >>      C3132121111133313233121111331333133313331333133313331333132313231333133312222   >>