1） 软后缀都是女的名字
[-IA] Julia, Amelia, Maria, Alicia, Olivia, Emilia, Georgia, Mia, Sophia/Sofia, Lydia, Aria, Patricia, Tricia, Natalia, Alexandria, Felicia, Anastasia, Virginia, Sylvia, Leticia, Tania, Cynthia, Victoria, Claudia, etc.
[-INA/-INE] Christina/Christine, Regina, Elina, Nina, Karina/Katrina, Angelina, Gina, Tina, Sabrina, Georgina, Tina, Justina, Jasmina/Jasmine, Katherine, Elaine, etc.
[-A] Jessica, Laura, Angela, Ava/Eva, Isla, Ella, Isabella, Freya, Matilda, Sienna, Lola, Anna, Mila, Bella, Zara, Maya, Emma, Thea, Lisa/Liza/Eliza, Aisha, Clara, Francesca, Sara, Luca, Arabella, Lea/Leah, Tara, Kayla, Veronica, Diana, Jenna, Erika, Tessa, Sandra, Latoya, Chelsea, Vanessa, Cassandra, Barbara, Pamela, Kendra, Tanya, Joanna, Tamara, Alisha/Elisha, Linda, Theresa, Miranda, Donna, etc. (有一个例外，Joshua是男名）
[-LY/-LYN/-LINE/etc.] Elly, Lily/Lilly, Emily, Sally, Kimberly, Beverly, Carly, Kelly, Shelly, Holly, Molly, Lyn/Lynn, Evelyn/Eveline, Caitlyn, Gwendolyn, Marilyn, Jolyn/Jolene, Carolyn/Caroline, Madeline, Jacquelyn/Jacklyn, Charlene, Darlene, etc.
2）硬后缀和[-R]都是男的名字
[-R] Oliver, Alexander, Christopher, Jasper, Roger, Peter, Carter, Spencer, Dexter, Tyler, Walter, Oscar, Javier/Xavier, Edgar, Victor, Trevor, Arthur, Taylor, Hector, Theodor, Salvador, Alister/Alistair, etc.（有一些例外，比如 Jennifer, Eleanor 是女名）
[-D] Donald, Ronald, Leonard, Edward, Richard, Bernard, Gerald, David, Jared, Fred, Raymond, Chad, Todd, Leopold, Theobald, Lloyd.
[-T] Albert, Robert, Vincent, Ernest, Brent, Grant, Clint, Best, Trent, Bart, Elliott, Brett, Scott, Garrett.
[-G/-K/-C/-KE] Greg, Craig, Mark, Jack, Nick, Rick, Brock, Frank, Derek/Derrick, Patrick, Kendrick, Frederick, Dominic, Alec, Eric, Blake, Luke.
[-S/-X] Charles, Dennis, Curtis, Marcus, Francis, Louis/Luis, Darius, Carlos, Lewis, James, Boris, Travis, Alexis/Alexios, Ellis, Miles, Matthias, Nicholas, Lazarus, Cornelius, Douglas, Lucas, Ross, Max, Alex, Felix, Rex.
[-SON] Jackson, Harrison, Jenson, Mason, Jason, Tyson, Nelson, Jayson, etc.
[-N] Justin, Kevin, Martin, Calvin, Dustin, Benjamin, Colin, Devin, Robin, Edwin, Alvin, Brian, Erin, Gavin, Melvin, Austin, Finn, Jayden, Reuben/Ruben, Ken, Ben, Glen/Glenn, Darren, Branden/Brenden/Brandon, Damien, Aaron, Cameron, Dillon, Preston, Jonathon/Jonathan, Sebastian, Clayton, Jon/John/Jean/Juan/Johan, Clinton, Ron, Jaxon, Dan, Stephen/Stephan/Steven/Stefan, Alan/Allan, Nolan, Adrian, Morgan, Tristan, Dean, Ethan/Evan, Ivan/Ian, Julian, Logan, Dylan, Jordan, Sean/Shawn, Roman, Milton, Herman, Bryan, Ryan, etc. (有极少数例外，比如：Megan/Meghan 和 Ellen 是女名）
[-M] William, Adam, Liam, Jim, Tim, Graham, Abram （其实不多了）
[-O] Theo, Leo, Arlo, Hugo, Gustavo （也算软后缀，不过都是男的用。不多）
https://www.zhihu.com/question/67467110
https://zhuanlan.zhihu.com/p/52208708
http://www.yingwenming.net/
