C3131313233313113313223313223313221323331323331322133313232213231121   >>    C313131323331311331322331322331322132333132333132213331323221323112   <<    C3131313233313113313223313223313221323331323331322133313232213231123   >>      C3131313233313113313223313223313221323331323331322133313232213231122   >>