B33113313132313113313223313331323133313221211331333133313331211111333132212131   >>    B3311331313231311331322331333132313331322121133133313331333121111133313221213   <<    B33113313132313113313223313331323133313221211331333133313331211111333132212133   >>      B33113313132313113313223313331323133313221211331333133313331211111333132212132   >>