Here are some examples: The strong inflection is used when there is no article at all, or if the noun is preceded by a non-inflectable word or phrase such as ein bisschen, etwas or viel ("a little, some, a lot of/much").
(Note: the masculine and neuter genitive singular was originally "-es", as might be expected, but the weak ending "-en" began to displace it by the seventeenth century, and became common by the mid-eighteenth.
[2]) The mixed inflection is used when the adjective is preceded by an indefinite article (ein-, kein-) or a possessive determiner.
The weak inflection is used when there is a definite word in place (der [die, das, des, den, dem], jed-, jen-, manch-, dies-, solch- and welch-).
The attributive superlative form adds the "st" to the comparative root and then the conventional adjective ending.