C11112331312111112111133133313331333133313112113313331333133313231323132233321   >>    C1111233131211111211113313331333133313331311211331333133313331323132313223332   <<    C11112331312111112111133133313331333133313112113313331333133313231323132233323   >>      C11112331312111112111133133313331333133313112113313331333133313231323132233322   >>