C3131313233313113313223313223313112113313233313133313231323311211   >>    C313131323331311331322331322331311211331323331313331323132331121   <<    C3131313233313113313223313223313112113313233313133313231323311213   >>      C3131313233313113313223313223313112113313233313133313231323311212   >>