C1111233131211111211113313331323133313231323223313331323133313321111331323321   >>    C111123313121111121111331333132313331323132322331333132313331332111133132332   <<    C1111233131211111211113313331323133313231323223313331323133313321111331323323   >>      C1111233131211111211113313331323133313231323223313331323133313321111331323322   >>