C313212111113331323312111133133313331333133313331333133313231333132313233313221   >>    C31321211111333132331211113313331333133313331333133313331323133313231323331322   <<    C313212111113331323312111133133313331333133313331333133313231333132313233313223   >>      C313212111113331323312111133133313331333133313331333133313231333132313233313222   >>