[['date', 'number', 'type', 'captain', 'casualties'], ['16 oct 1943', 'u - 470', 'viic', 'o / l grave', '46'], ['16 oct', 'u - 964', 'viic', 'o / l hummerjohann', '47'], ['16 oct', 'u - 844', 'ixc', 'o / l moller', '53'], ['17 oct', 'u - 540', 'ixc', 'k / l kasch', '55'], ['17 oct', 'u - 631', 'viic', 'o / l kruger', '53'], ['17 oct', 'u - 841', 'ixc', 'k / l bender', '26']]
the Type is Viic exactly 2 time on October 16
the [ENT] is [ENT] exactly 2 time on [ENT]