C11112331333132311331333133313331333132312323133313232221123233321   >>    C1111233133313231133133313331333133313231232313331323222112323332   <<    C11112331333132311331333133313331333132312323133313232221123233323   >>      C11112331333132311331333133313331333132312323133313232221123233322   >>