B33113313132313113313223313331323133313221211331333133112312121   >>    B3311331313231311331322331333132313331322121133133313311231212   <<    B33113313132313113313223313331323133313221211331333133112312123   >>      B33113313132313113313223313331323133313221211331333133112312122   >>