Below is an instruction that describes a task. Write a response that appropriately completes the request.

### Instruction:
What is the month and year less than 106005 were sunk by aircraft and 61857 were sunk by warship or raider?

### Inputs:
table_name: table, columns: ['Month, year', 'Sunk by U-Boat', 'Sunk by aircraft', 'Sunk by warship or raider', 'Sunk by mines', 'German submarines lost']

### Response:
SELECT Month, year FROM table WHERE Sunk by aircraft < 106005 AND Sunk by warship or raider = 61857