C11112331312111112111133133313231333132313331333132313311211111323232321   >>    C1111233131211111211113313331323133313231333133313231331121111132323232   <<    C11112331312111112111133133313231333132313331333132313311211111323232323   >>      C11112331312111112111133133313231333132313331333132313311211111323232322   >>