C313212111113331323312111133133313331333133313331333133313331333133321222121   >>    C31321211111333132331211113313331333133313331333133313331333133313332122212   <<    C313212111113331323312111133133313331333133313331333133313331333133321222123   >>      C313212111113331323312111133133313331333133313331333133313331333133321222122   >>