4B1: 4240 to 4470. 4B2: 4470 to 4320. 4B3-1: 4320 to 4528. 4B3-2: 4528 to 4412. 4B3-3: 4412 to 4692. 4B3-4: 4692 to ? (still in progress)?

by Pure Hearts International September 06, 2017