C11112331333132311331333133313331333132313311211331323112113111   >>    C1111233133313231133133313331333133313231331121133132311211311   <<    C11112331333132311331333133313331333132313311211331323112113113   >>      C11112331333132311331333133313331333132313311211331323112113112   >>