SCREEN
ZONE 1
ZONE 2
ZONE 3
CORE
td1
blocks
blocks
blocks
blocks
blocks
tdLEFT
td2L
td2C
td2R
blocks
blocks
blocks
blocks
blocks
tdCENTER
td3L
td3C
td3R
blocks
blocks
blocks
blocks
blocks
tdRIGHT
td4
ZONE 4
ZONE 5