C1111133313331323223313331333133313331323131211113313231121322121   >>    C111113331333132322331333133313331333132313121111331323112132212   <<    C1111133313331323223313331333133313331323131211113313231121322123   >>      C1111133313331323223313331333133313331323131211113313231121322122   >>