C11112331333132311331333133313331333132313332113313231323123221   >>    C1111233133313231133133313331333133313231333211331323132312322   <<    C11112331333132311331333133313331333132313332113313231323123223   >>      C11112331333132311331333133313331333132313332113313231323123222   >>