C111113331333132322331333133313331323132322233231323133313231333132213112121   >>    C11111333133313232233133313331333132313232223323132313331323133313221311212   <<    C111113331333132322331333133313331323132322233231323133313231333132213112123   >>      C111113331333132322331333133313331323132322233231323133313231333132213112122   >>