Comment the following code, what is the intermediate and final value of PORTB if the initial value in PINB is 0XFC

IN R20, PINB
ORI R20, 0b00000100
ANDI R20, 0b11011111
OUT PORTB, R20 ;Find intermediate value of PORTB
LDI R21, 0x00
OUT DDRC, R21
LDI R21, 0xFF
OUT PORTC, R21
IN R20, PINC
EOR R20, 0b01010101
OUT PORTB, R20
HERE: RJMP HERE