C11112331312111112111133132313331333133313232212111113231323232321   >>    C1111233131211111211113313231333133313331323221211111323132323232   <<    C11112331312111112111133132313331333133313232212111113231323232323   >>      C11112331312111112111133132313331333133313232212111113231323232322   >>