Bobaljik formulates the Comparative-Superlative Generalization: With respect to the positive, if any adjective’s comparative degree were suppletive, so would its superlative; vice versa, if any adjective’s superlative degree were suppletive, then so would its comparative. Bobaljik phrases the Containment Hypothesis thus: "The representation of the superlative properly contains that of the comparative (in all languages that have a morphological superlative)". Indeed:  Additionally, Bobaljik asserts that Universal Grammar lacks the superlative morpheme.