The Spenserian sonnet sequence had 14 lines. The lines were organized as three sets of four lines, and an ending set of two lines. They had five sets of rhymes: abab, bcbc, cdcd, ee.
There are no hard-and-fast rules, but generally a Shaksperian sonnet will have fourteen lines with three groups of four, followed by a pair at the end.
Petrarchian sonnets have eight lines in two...