C11112331312111112111133133313331323132313232233133313112113232321   >>    C1111233131211111211113313331333132313231323223313331311211323232   <<    C11112331312111112111133133313331323132313232233133313112113232323   >>      C11112331312111112111133133313331323132313232233133313112113232322   >>