1|Course #1|101_102_103_104_105_106_107_108_109_110
2|Course #2|121_122_123_124_125_126_127_128_129_118_119_120
3|Course #3|131_132_133_134_135_136_137_138_139_101_111_112_113_114_115_116_117
4|Course #4|121_122_123_124_125_126_127_128_129_118_119_120_131_132_133_134_135_136_137_138_139_101_111_112_113_114_115_116_117