 
                             75 minutes
                                        75 minutes                                     
                             60 minutes
                                        60 minutes                                     
                             2 hours
                                        2 hours                                     
                             60 to 90 minutes
                                        60 to 90 minutes                                     
                             3 hours
                                        3 hours                                     
                             2 hours
                                        2 hours                                     
                             2 hours
                                        2 hours