What is we two where you two is ngipen?
CREATE TABLE table_15993 (
    "Case/Suffix" text,
    "we two" text,
    "you and I" text,
    "you two" text,
    "them two (the two)" text,
    "who-two" text
)
SELECT "we two" FROM table_15993 WHERE "you two" = 'ngipen'
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 we two where you two is ngipen? ### Input: CREATE TABLE table_15993 (
    "Case/Suffix" text,
    "we two" text,
    "you and I" text,
    "you two" text,
    "them two (the two)" text,
    "who-two" text
) ### Response: SELECT "we two" FROM table_15993 WHERE "you two" = 'ngipen'