12 lead ECG problem with the graph?

I've used the following script to produce 12 ECG plots. The problem is the 12 graphs need to be on the same axis with no spaces between them can anyone shed any light on how I would go about this?

Thanks

TwelveLeadArray = csvread('twelveLead1.csv');
LeadI = TwelveLeadArray(:,1);
subplot(3,4,1)
plot(LeadI)
LeadII = TwelveLeadArray(:,2);
subplot(3,4,5)
plot (LeadII)
LeadV1 = TwelveLeadArray(:,3);
subplot(3,4,3)
plot(LeadV1)
LeadV2 = TwelveLeadArray(:,4);
subplot(3,4,7)
plot(LeadV2)
LeadV3 = TwelveLeadArray(:,5);
subplot(3,4,11)
plot(LeadV3)
LeadV4 = TwelveLeadArray(:,6);
subplot(3,4,4)
plot(LeadV4)
LeadV5 = TwelveLeadArray(:,7);
subplot(3,4,8)
plot(LeadV5)
LeadV6 = TwelveLeadArray(:,8);
subplot(3,4,12)
plot(LeadV6)
LeadIII = LeadII-LeadI;
subplot(3,4,9)
plot(LeadIII)
LeadaVR = -1/2*(LeadI+LeadII);
subplot(3,4,2)
plot(LeadaVR)
LeadaVL = 1/2*(LeadI-LeadIII);
subplot(3,4,6)
plot(LeadaVL)
LeadaVF = 1/2*(LeadII+LeadIII);
subplot(3,4,10)
plot(LeadaVF)