three stanzas of four lines each: abab cdcd efef (3 stanzas).im not sure about the last gg part though. this website might helphttp://www.ehow.com/how_3335_write-sonnet.html
There are 3 four-line stanzas in a Shakespearean Sonnet. The last stanza has 2 lines. Each line has 10 syllables and has a rhyming pattern of a-b-a-b-c-d-c-d-e-f-e-f-g-g