C11112331312111112111133131333133313231333132313231333132213131   >>    C1111233131211111211113313133313331323133313231323133313221313   <<    C11112331312111112111133131333133313231333132313231333132213133   >>      C11112331312111112111133131333133313231333132313231333132213132   >>