Notice, how in the second list the first level 2 element starts with a “b.”, instead of an “a.”. The level 3 list (“i. Level, ii. Here”) is an implicit list item.
1.       The
a.       Levels
                                                              i.      Go
                                                            ii.      One
                                                          iii.      Up
                                                           iv.      At
b.      A
2.       Time
1.       One
                                                              i.      Level
                                                            ii.      Here
b.      Is
2.       Skipped