C1111233131211111211113313331333132313231323223313113313113313112332321   >>    C111123313121111121111331333133313231323132322331311331311331311233232   <<    C1111233131211111211113313331333132313231323223313113313113313112332323   >>      C1111233131211111211113313331333132313231323223313113313113313112332322   >>