给定美国联邦州的名称 (包括哥伦比亚特区)，输出相应的邮政缩写，对应关系如下
"Alabama": "AL", "Alaska": "AK", "Arizona": "AZ",
"Arkansas": "AR", "California": "CA", "Colorado": "CO",
"Connecticut": "CT", "Delaware": "DE", "District of Columbia": "DC",
"Florida": "FL", "Georgia": "GA", "Hawaii": "HI",
"Idaho": "ID", "Illinois": "IL", "Indiana": "IN",
"Iowa": "IA", "Kansas": "KS", "Kentucky": "KY",
"Louisiana": "LA", "Maine": "ME", "Maryland": "MD",
"Massachusetts": "MA", "Michigan": "MI", "Minnesota": "MN",
"Mississippi": "MS", "Missouri": "MO", "Montana": "MT",
"Nebraska": "NE", "Nevada": "NV", "New Hampshire": "NH",
"New Jersey": "NJ", "New Mexico": "NM", "New York": "NY",
"North Carolina": "NC", "North Dakota": "ND", "Ohio": "OH",
"Oklahoma": "OK", "Oregon": "OR", "Pennsylvania": "PA",
"Rhode Island": "RI", "South Carolina": "SC", "South Dakota": "SD",
"Tennessee": "TN", "Texas": "TX", "Utah": "UT",
"Vermont": "VT", "Virginia": "VA", "Washington": "WA",
"West Virginia": "WV", "Wisconsin": "WI", "Wyoming": "WY"
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