user: Question: What is the month and year less than 106005 were sunk by aircraft and 61857 were sunk by warship or raider?
Columns: ['Month, year', 'Sunk by U-Boat', 'Sunk by aircraft', 'Sunk by warship or raider', 'Sunk by mines', 'German submarines lost']
Types: ['text', 'real', 'real', 'real', 'real', 'real']
Sample row: ["39-09 Sep. '39", 153879.0, 0.0, 5051.0, 29537.0, 2.0]
SQL:

assistant: SELECT "Month, year" FROM "Table" WHERE "Sunk by aircraft" < 106005.0 AND "Sunk by warship or raider" = 61857.0;