C1111233133313231133133313331333133313231312111133133313222321321   >>    C111123313331323113313331333133313331323131211113313331322232132   <<    C1111233133313231133133313331333133313231312111133133313222321323   >>      C1111233133313231133133313331333133313231312111133133313222321322   >>