C11112331312111112111133133313331333132311211332123313331323211231221   >>    C1111233131211111211113313331333133313231121133212331333132321123122   <<    C11112331312111112111133133313331333132311211332123313331323211231223   >>      C11112331312111112111133133313331333132311211332123313331323211231222   >>