What is the imperfect stem for the word that has a future stem of ikusiko?
CREATE TABLE table_14596 (
    "Perfect stem" text,
    "Future stem" text,
    "Imperfect stem" text,
    "Short stem" text,
    "Meaning" text
)
SELECT "Imperfect stem" FROM table_14596 WHERE "Future stem" = 'ikusiko'
Below are sql tables schemas paired with instruction that describes a task. Using valid SQLite, write a response that appropriately completes the request for the provided tables. ### Instruction: What is the imperfect stem for the word that has a future stem of ikusiko? ### Input: CREATE TABLE table_14596 (
    "Perfect stem" text,
    "Future stem" text,
    "Imperfect stem" text,
    "Short stem" text,
    "Meaning" text
) ### Response: SELECT "Imperfect stem" FROM table_14596 WHERE "Future stem" = 'ikusiko'