Same error: Foregin Key Incorrectly Formed

SQL CODE:

CREATE TABLE DEPENDENT$\_$maw

$($Employee$\_$SSN CHAR$(9)$ NOT NULL,

Dependent$\_$Name VARCHAR$(15)$ NOT NULL,

Sex CHAR CHECK $($Sex IN $(\text{'}$M$\text{'},\text{'}$F$\text{'},\text{'}$m$\text{'},\text{'}$f$\text{'})),$

Birthday DATE,

Relationship VARCHAR$(8),$

CONSTRAINT FK$\_$EMPLOYEE FOREIGN KEY $($Employee$\_$SSN$)$ REFERENCES Employee$($SSN$)$ ON DELETE CASCADE$)$;