C313212111113331323312111133133313331333133313331333133313233313231232321   >>    C31321211111333132331211113313331333133313331333133313331323331323123232   <<    C313212111113331323312111133133313331333133313331333133313233313231232323   >>      C313212111113331323312111133133313331333133313331333133313233313231232322   >>