The only way I can see berlinclock is with digraphs from the text of the earlier parts, broken into ?B, ER, LI, NC, LO, CK, in the respective words:
deBris, encumBered, tremBling, Breach, chamBer
thERemains, encumbERed, lowER, uppERleft, insERted, peERed, chambER…
…flickER, thERoom, emERged
trembLIng, LIttle, fLIcker
eNCumbered
sLOwly, LOwer
fliCKer
Note that in this scenerio, we would get YBERLINCLOCK, EBERLINCLOCK, or MBERLINCLOCK.