GasLog Ltd. and its Subsidiaries Notes to the consolidated financial statements (Continued) For the years ended December 31, 2017, 2018 and 2019 (All amounts expressed in thousands of U.S. Dollars, except share and per share data)    4. Equity Transactions (Continued)
On February 26, 2019, the Partnership entered into a Third Amended and Restated Equity Distribution Agreement to further increase the size of the ATM Programme from $144,040 to $250,000. As of December 31, 2019, the unutilized portion of the ATM Programme is $126,556.
On April 1, 2019, GasLog Partners issued 49,850 common units in connection with the vesting of 24,925 RCUs and 24,925 PCUs under the GasLog Partners’ Plan at a price of $22.99 per unit.
On June 24, 2019, the Partnership Agreement was amended, effective June 30, 2019, to eliminate the IDRs in exchange for the issuance by the Partnership to GasLog of 2,532,911 common units and 2,490,000 Class B units (of which 415,000 are Class B-1 units, 415,000 are Class B-2 units, 415,000 are Class B-3 units, 415,000 are Class B-4 units, 415,000 are Class B-5 units and 415,000 are Class B-6 units), issued on June 30, 2019. The Class B units have all of the rights and obligations attached to the common units, except for voting rights and participation in distributions until such time as GasLog exercises its right to convert the Class B units to common units. The Class B units will become eligible for conversion on a one-for-one basis into common units at GasLog’s option on July 1, 2020, July 1, 2021, July 1, 2022, July 1, 2023, July 1, 2024 and July 1, 2025 for the Class B-1 units, Class B-2 units, Class B-3 units, Class B-4 units, Class B-5 units and the Class B-6 units, respectively. Following the IDR elimination, the allocation of GasLog Partners’ profit to the non-controlling interests is based on the revised distribution policy for available cash stated in the Partnership Agreement as amended, effective June 30, 2019, and under which 98% of the available cash is distributed to the common unitholders and 2% is distributed to the general partner. The updated earnings allocation applies to the total GasLog Partners’ profit for the three months ended June 30, 2019 and onwards.
* Excludes profits of GAS-fourteen Ltd., GAS-twenty seven Ltd. and GAS-twelve Ltd. for the period prior to their transfers to the Partnership on April 26, 2018, November 14, 2018 and April 1, 2019, respectively.
Dividends declared attributable to non-controlling interests included in the consolidated statement of changes in equity represent cash distributions to holders of common and preference units.
In the year ended December 31, 2019, the board of directors of the Partnership approved and declared cash distributions of $73,090 and of $31,036 for the common units and preference units, respectively, held by non-controlling interests.
Table:
Allocation of GasLog Partners’ profit/(loss)(*) | 2018 | 2019
Partnership’s profit/(loss) attributable to: |  | 
Common unitholders | 75,879 | (66,268)
General partner | 1,602 | (1,479)
IDRs | 2,618 | —
Paid and accrued preference equity distributions | 22,498 | 30,328
Total | 102,597 | (37,419)
Partnership’s profit/(loss) allocated to GasLog | 23,882 | (22,467)
Partnership’s profit/(loss) allocated to non-controlling interests | 78,715 | (14,952)
Total | 102,597 | (37,419)


Question: What are the components of Class B units?
Answer: Class B-1 units, Class B-2 units, Class B-3 units, Class B-4 units, Class B-5 units, Class B-6 units