C11112331333132311331333133313331323132313331211111333131313231   >>    C1111233133313231133133313331333132313231333121111133313131323   <<    C11112331333132311331333133313331323132313331211111333131313233   >>      C11112331333132311331333133313331323132313331211111333131313232   >>