C11112331312111112111133133313331333132112312111111331323132213131   >>    C1111233131211111211113313331333133313211231211111133132313221313   <<    C11112331312111112111133133313331333132112312111111331323132213133   >>      C11112331312111112111133133313331333132112312111111331323132213132   >>