C11112331312111112111133133313331333132323133313331323133311232132212321   >>    C1111233131211111211113313331333133313232313331333132313331123213221232   <<    C11112331312111112111133133313331333132323133313331323133311232132212323   >>      C11112331312111112111133133313331333132323133313331323133311232132212322   >>