SELECT "Masculine u-stems" FROM table_77493 WHERE "Neuter a-stems" = 'skip' AND "Masculine a-stems" = 'fisker'
What is the u form of the word with a neuter form of skip and a masculine a-ending of fisker?
CREATE TABLE table_77493 (
    "Masculine a-stems" text,
    "Masculine u-stems" text,
    "Feminine \u014d-stems" text,
    "Neuter a-stems" text,
    "Masculine an-stems" text,
    "Feminine \u014dn-stems" text
)