't kofschip

The 't kofschip (Dutch pronunciation: [ət ˈkɔfsxɪp], the merchant-ship), 't fokschaap (the breeding sheep), also often referred to as kofschiptaxi or soft ketchup (among foreign language learners),^[1] rule is a mnemonic that determines the endings of a regular Dutch verb in the past indicative/subjunctive and the ending of the past participle. This rule should not be confused with the so-called T-rules (t-regels).