2014-01-01 transaction 1
  㐀                                          1
  㐀:㐁                                       -1

2014-01-02 transaction 2
  㐀:㐁:㐂                                      1
  㐀:㐁:㐂:㐃                                   -1

2014-01-03 transaction 3
  㐀:㐁:㐂:㐃:㐄                                  1
  㐀                                         -1