Symbolize the following sentences using the schemes of abbreviation provided.

1. Not a single penguin has the ability to fly. (Px: x is a penguin; Fx: x has the ability to fly)
2. Only those who have studied logic truly understand the complexities of the English language. (Sx: x has studied logic; Ux: x understands the complexities of the English language)
3. Some people are not very helpful. (Px: x is a person; Hx: x is very helpful)
4. All basketball players are tall. (Bx: x plays basketball; Tx: x is tall)
5. Anyone who does not favor additional gun control legislation is either a Democrat who does not support the President's position or a Republican. (Fx: x favors additional gun control legislation; Dx: x is a Democrat; Sx: x supports the President's position; Rx: x is a Republican)