In which parts of the poem are adjectives used to enhance the effects of parallelism?
I Hear America Singing
by Walt Whitman

(A) I hear America singing, the varied carols I hear;
Those of (B) mechanics, each one singing his as it should be, blithe and strong;
The carpenter singing as he measures his plank and beam;
(C) The mason singing his as he makes ready for work, or leaves off work;
The boatman singing what belongs to him in his boat, the deckhand singing
on the steamboat deck;
(D) The shoemaker singing as he sits on his bench, the hatter singing as he
stands,
The wood-cutter's song, (E) the ploughboy's on his way in the morning, or at noon intermission
or at sundown,
The delicious singing of the mother, or of the young wife at work, or of the girl sewing or
washing
(F) Each singing what belongs to him or her, and to none else,
The day what belongs to the day—at night, the party of the (G) young fellows, robust, friendly,
Singing, with open mouths their strong melodious songs