B33113313132313113313223313331323132313331333133112213132211331   >>    B3311331313231311331322331333132313231333133313311221313221133   <<    B33113313132313113313223313331323132313331333133112213132211333   >>      B33113313132313113313223313331323132313331333133112213132211332   >>