C11112331312111112111133133313231333132313232233133313231333133211113313233321   >>    C1111233131211111211113313331323133313231323223313331323133313321111331323332   <<    C11112331312111112111133133313231333132313232233133313231333133211113313233323   >>      C11112331312111112111133133313231333132313232233133313231333133211113313233322   >>