String [] letters = {
  "L", "A", "N", "G", "U", "A", "G", "E"
};

String logicalnot = "!=";

float[] letrx = new float[letters.length];
float[] letry0 = new float[letters.length];
float[] letry1 = new float[letters.length];
float[] letry2 = new float[letters.length];
float[] letry3 = new float[letters.length];
float[] letry4 = new float[letters.length];

float lognotx;
float lognoty;
float textHeight;
PFont f;
float speed = 2.0;
float offset = .05;

void setup() {
  size(300, 300);
  smooth();
  f = createFont("serif", 60);
  textFont(f);
  textHeight = textAscent() + textDescent();

  for (int i=0; i < letters.length; i++) {
    if (i == 0) 
    {
      letrx[i] = width + 20;

      letry0[i] = height + 20 + textHeight;
      letry1[i] = height + 20 + textHeight * 2;
      letry2[i] = height + 20 + textHeight * 3;
      letry3[i] = height + 20 + textHeight * 4;
      letry4[i] = height + 20 + textHeight * 5;
    } 
    else {
      letrx[i] = letrx[i-1] + textWidth(letters[i-1]) + textWidth(logicalnot);

      letry0[i] = letry0[i-1] + textHeight*2;
      letry1[i] = letry1[i-1] + textHeight*2;
      letry2[i] = letry2[i-1] + textHeight*2;
      letry3[i] = letry3[i-1] + textHeight*2;
      letry4[i] = letry4[i-1] + textHeight*2;
    }
  }
}

void draw() {
  background(255);


  for (int i=0; i < letters.length; i++) { 

    // vertical 0
    textAlign(CENTER);
    fill(205);
    text(letters[i], 0, letry0[i]);
    text(logicalnot, 0, letry0[i] + textHeight);
    letry0[i] -= speed;

    if (letry0[i] + textHeight < -textHeight*2 -10) {
      letry0[i] = letry0[(i + letters.length -1) % letters.length] + textHeight*2;
    }

    // verticanl 1
    text(letters[i], width*.25, letry1[i]);
    text(logicalnot, width*.25, letry1[i] + textHeight);
    letry1[i] -= speed*1.05;

    if (letry1[i] + textHeight + offset < -textHeight*2 -10) {
      letry1[i] = letry1[(i + letters.length -1) % letters.length] + textHeight*2;
    }

    // vertical 2
    text(letters[i], width*.5, letry2[i]);
    text(logicalnot, width*.5, letry2[i] + textHeight);
    letry2[i] -= speed*1.1;

    if (letry2[i] + textHeight + offset < -textHeight*2 -10) {
      letry2[i] = letry2[(i + letters.length -1) % letters.length] + textHeight*2;
    }

    // vertical 3
    text(letters[i], width*.75, letry3[i]);
    text(logicalnot, width*.75, letry3[i] + textHeight);
    letry3[i] -= speed*1.15;

    if (letry3[i] + textHeight + offset < -textHeight*2 -10) {
      letry3[i] = letry3[(i + letters.length -1) % letters.length] + textHeight*2;
    }

    // vertical 4
    text(letters[i], width, letry4[i]);
    text(logicalnot, width, letry4[i] + textHeight);
    letry4[i] -= speed*1.2;

    if (letry4[i] + textHeight + offset < -textHeight*2 -10) {
      letry4[i] = letry4[(i + letters.length -1) % letters.length] + textHeight*2;
    }

    // horizontal
    textAlign(LEFT);
    fill(0);
    text(letters[i], letrx[i], height/2);
    text(logicalnot, letrx[i] + textWidth(letters[i]), height/2);
    letrx[i] -= speed*.9;
    if (letrx[i] + textWidth(letters[i]) < -textWidth(logicalnot) + -textWidth(letters[i]) + -10) {
      letrx[i] = letrx[(i + letters.length -1) % letters.length] + 
        textWidth(letters[(i + letters.length -1) % letters.length]) +
        textWidth(logicalnot);
    }
  }
}