table: [['yard name', 'location (city , state)', '1st ship delivery date', 'ship types delivered', 'total number of ways', 'total vessels built for usmc'], ['ingalls shipbuilding', 'pascagoula , mississippi', '1940', 'c3 type', '6 ways', '80 ships for usmc or for private acct'], ['tampa shipbuilding corp', 'tampa , florida', 'july 1940', 'c2 type', '3 ways', '13 ships for usmc (plus 37 more for usn)'], ['gulf shipbuilding', 'chickasaw , alabama', 'april 1941', 'c2 type', 'number', '36 ships for usmc (plus 39 for usn)'], ['pennsylvania shipyards', 'beaumont , texas', 'may 1941', 'c1 type , c1 - m type , n3 type , v4 type', '5 way', '99 ships for usmc'], ['todd houston shipbuilding corp', 'houston , texas', 'may 1942', 'ec2 type', '9 ways', '222 ships for usmc'], ['delta shipbuilding co', 'new orleans , louisiana', 'may 1942', 'ec2 type', '8 ways', '188 ships for usmc'], ['alabama drydock co', 'mobile , alabama', 'may 1942', 'ec2 type , t2 type', '12 ways', '123 ships for usmc (remainder for private acct)'], ['avondale marine ways', 'westwego , louisiana', 'january 1943', 'n3 type , v4 type', 'number', '22 ships (remainder for private acct)'], ['ja jones construction co', 'panama city , florida', 'march 1943', 'ec2 type , t1 type', '6 ways', '108 ships for usmc'], ['pendleton shipyards corp', 'new orleans , louisiana', 'august 1943', 'n3 type , v4 type', 'number', '13 ships for usmc'], ['todd galveston drydocks co', 'galveston , texas', 'september 1943', 't1 type', 'number', '12 ships']]
ref: in 1941 and 1942 Ship were Delivered in the same month
template: in [ENT] and [ENT] [ENT] were [ENT] in the same month