Compare each case across both numbers. The forms below are the noun's stored reference paradigm.
Singular and plural case forms for план
Case
Singular
Plural
Nominative
план
планы
Accusative
план
планы
Genitive
плана
планов
Dative
плану
планам
Instrumental
планом
планами
Prepositional
плане
планах
Form pattern
How the forms are built
The paradigm above is authoritative. These notes expose a transparent ending change only when the stored declension family supports one.
Genitive · Singularплан- + -а → плана
Keep the stored stem and add -а.
Show all case-build notes
Nominative · Singularплан
This is the dictionary form used to identify the noun.Nominative · Pluralплан- + -ы → планы
Keep the stored stem and add -ы.Accusative · Singularплан- + zero ending → план
Remove the zero ending; this form has a zero ending.Accusative · Pluralплан- + -ы → планы
Keep the stored stem and add -ы.Genitive · Singularплан- + -а → плана
Keep the stored stem and add -а.Genitive · Pluralплан- + -ов → планов
Keep the stored stem and add -ов.Dative · Singularплан- + -у → плану
Keep the stored stem and add -у.Dative · Pluralплан- + -ам → планам
Keep the stored stem and add -ам.Instrumental · Singularплан- + -ом → планом
Keep the stored stem and add -ом.Instrumental · Pluralплан- + -ами → планами
Keep the stored stem and add -ами.Prepositional · Singularплан- + -е → плане
Keep the stored stem and add -е.Prepositional · Pluralплан- + -ах → планах
Keep the stored stem and add -ах.