Earliest Start Dates
													1
																			4
						1																				5
																3
																														2
																																														6
																																				17
										12													15
																																																															23		24
																																									3
																																												20
																																																	1
						12
																																																									23								25
																																																												1
			0
																								15																3
						12
																	3																2
																									17												19															2
											12
																																																											8
					4
																																																8
																															4
										4																																									17
	16