C11111211113313112113313331333133313331312111113331322133313231323122132223131   >>    C1111121111331311211331333133313331333131211111333132213331323132312213222313   <<    C11111211113313112113313331333133313331312111113331322133313231323122132223133   >>      C11111211113313112113313331333133313331312111113331322133313231323122132223132   >>