C11112331312111112111133133313231333132313331333131133132313232321   >>    C1111233131211111211113313331323133313231333133313113313231323232   <<    C11112331312111112111133133313231333132313331333131133132313232323   >>      C11112331312111112111133133313231333132313331333131133132313232322   >>