C3132121111133313233121111331333133313331333133313331323133313231333132232221   >>    C313212111113331323312111133133313331333133313331333132313331323133313223222   <<    C3132121111133313233121111331333133313331333133313331323133313231333132232223   >>      C3132121111133313233121111331333133313331333133313331323133313231333132232222   >>