C11112331312111112111133133313331333132311211331323222112323231   >>    C1111233131211111211113313331333133313231121133132322211232323   <<    C11112331312111112111133133313331333132311211331323222112323233   >>      C11112331312111112111133133313331333132311211331323222112323232   >>