4:
06.28=04 12.22=04 18.16=04 16.18=04 22.12=04 28.06=04 .........|00.04=04
------------------------------------------------------------------------
........304=12+292.................304=282+22........|
........304=22+282.................304=292+12........|
......................................................
I
06.28=04 12.22=04 18.16=04 16.18=04 22.12=04 28.06=04 .........|00.04=04
------------------------------------------------------------------------
........304=12+292.................304=282+22........|
........304=22+282.................304=292+12........|
......................................................
I