capture certain bit in ICMP package

[Martin T <m4rtntns () gmail com>]

I would like to capture only the value of 108'th and 110'th bit in
ICMP echo request packet. Those bits should reside in ICMP payload
area. Is there a possibility in tcpdump to capture only specific bit?
Or at least show the "tcpdump -i eth0 -n -X" output in binary instead
of hexadecimal?
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