first pass at L20 ubersubset

these I got less than 100% on first pass at incorrect problems

119 125 131 137 143 150 174 176

181 182 198 199 202 203 206 207

208 216 217 221 242 248 251 252

267 270 272 274 275 277 278 279

282 288 297 300 303 303 306 307

308 309 316 317 320 321 323 326

332 334 335 340 343 344 345 347

356 365 366 369 378 379 381 383

386 389 390 391 392 393 394 395