The speaker in the poem stated that he will "awake some day / To find they have flown away?. this flight represent for him the loss of youth
The run-on lines shows movement and reflect the swans' flight. They form a ring – a symbol of eternity – may shows this reminds the author that while he might change, the swans remain the same, and even make the same patterns in the sky every year.
Conventional or stylistic decorative design is an adaptation from nature. Naturalistic design is a realistic adaptation from nature. Abstract and geometric decorative design has no direct relation to nature.